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The Big Bang Theory

2006-2018
Seasons: 11
Episodes: 256
User ratings: 603,575
Average rating: 8.3

Comedy, Romance

A woman who moves into an apartment across the hall from two brilliant but socially awkward physicists shows them how little they know about life outside of the laboratory.

Seasons ratings graph

Episodes ratings graph

Season 1

Season 2

Season 3

Season 4

Season 5

Season 6

Season 7

Season 8

Season 9

Season 10

Season 11

THE BIG BANG THEORY - EPISODES RATINGS GRAPH

Episodes details table

S01E00
Unaired Pilot
2006-05-01
Roommates, physics geniuses, academics and socially inept nerds Leonard and Sheldon are in need of some short term cash for dinner money and use their genius status for such purpose. On their way to dinner from their money making venture, they encounter Katie, a beautiful, sexually liberated and streetwise young woman, in some distress. She has just broken up with her boyfriend because of an issue he just disclosed to her, and due to another issue with her mother and her mother's new husband has nowhere to live. Despite Katie being out of their league, Leonard invites her to dinner and to stay at their place, she agreeing only on being up front that neither of them have any chance with her, and that her stay will only be for a predetermined short term time period. Despite these stipulations, Katie's stay does not sit well with Leonard and Sheldon's colleague Gilda, who sees her and Leonard someday getting together regardless of the fact that they have yet to go on a date or to have sex.
User ratings: 1,384
Average rating: 6.9
S01E01
Pilot
2007-09-24
A pair of socially awkward theoretical physicists meet their new neighbor Penny, who is their polar opposite.
User ratings: 4,078
Average rating: 8.4
S01E02
The Big Bran Hypothesis
2007-10-01
Penny is furious with Leonard and Sheldon when they sneak into her apartment and clean it while she is sleeping.
User ratings: 3,167
Average rating: 8.5
S01E03
The Fuzzy Boots Corollary
2007-10-08
Leonard gets upset when he discovers that Penny is seeing a new guy, so he tries to trick her into going on a date with him.
User ratings: 2,750
Average rating: 7.9
S01E04
The Luminous Fish Effect
2007-10-15
Sheldon's mother is called to intervene when he delves into numerous obsessions after being fired for being disrespectful to his new boss.
User ratings: 2,800
Average rating: 8.3
S01E05
The Hamburger Postulate
2007-10-22
Leslie seduces Leonard, but afterwards tells him that she is only interested in a one-night stand.
User ratings: 2,623
Average rating: 8.1
S01E06
The Middle Earth Paradigm
2007-10-29
The guys are invited to Penny's Halloween party, where Leonard has yet another run-in with Penny's ex-boyfriend Kurt.
User ratings: 2,775
Average rating: 8.6
S01E07
The Dumpling Paradox
2007-11-05
When Howard hooks up with Penny's old friend, his absence in the gang causes problems for the rest of the guys.
User ratings: 2,589
Average rating: 8.3
S01E08
The Grasshopper Experiment
2007-11-12
When Raj's parents set him up on a blind date, he finds he can talk to women with the aid of alcohol.
User ratings: 2,620
Average rating: 8.4
S01E09
The Cooper-Hofstadter Polarization
2008-03-17
Leonard and Sheldon's friendship is put to the test when Leonard wants to present a paper they co-authored at a physics convention, but Sheldon doesn't.
User ratings: 2,512
Average rating: 8.2
S01E10
The Loobenfeld Decay
2008-03-24
Leonard lies to Penny so that he and Sheldon can get out of watching her perform. However, Sheldon believes that the lie has too many loose ends, so he comes up with a new, unnecessarily complex one to replace it.
User ratings: 2,574
Average rating: 8.2
S01E11
The Pancake Batter Anomaly
2008-03-31
When Sheldon gets sick, Leonard, Howard and Raj go AWOL, leaving a reluctant Penny to deal with him.
User ratings: 2,561
Average rating: 8.3
S01E12
The Jerusalem Duality
2008-04-14
Sheldon decides to give up his work and focus on other tasks when a 15-year-old prodigy joins the university, so the other guys come up with a plan to get rid of him.
User ratings: 2,436
Average rating: 8.1
S01E13
The Bat Jar Conjecture
2008-04-21
Sheldon becomes so intent on demonstrating his intellectual superiority over the other guys that they kick him off the Physics Bowl team and replace him with his nemesis, Leslie.
User ratings: 2,514
Average rating: 8.5
S01E14
The Nerdvana Annihilation
2008-04-28
Penny gets mad at the guys when their full scale model of a time machine causes her to miss work, which prompts Leonard to give up all of his nerd memorabilia.
User ratings: 2,477
Average rating: 8.3
S01E15
The Pork Chop Indeterminacy
2008-05-05
Leonard, Howard and Raj fight over Sheldon's twin sister when she arrives in town. Raj takes part in a drug trial to suppress his selective mutism.
User ratings: 2,640
Average rating: 8.4
S01E16
The Peanut Reaction
2008-05-12
When Penny learns that Leonard has never had a birthday party, she and the rest of the guys plan a surprise party for him.
User ratings: 2,466
Average rating: 8.5
S01E17
The Tangerine Factor
2008-05-19
After a bad breakup, Penny finally agrees to go out on a date with Leonard, however they both develop doubts and turn to Sheldon for advice.
User ratings: 2,601
Average rating: 8.7
S02E01
The Bad Fish Paradigm
2008-09-22
Leonard becomes concerned when his date with Penny ends abruptly and she starts blowing him off. When told the truth, Sheldon would rather move out than keep Penny's reasons a secret from Leonard.
User ratings: 2,540
Average rating: 8.4
S02E02
The Codpiece Topology
2008-09-29
Sheldon is annoyed when Leonard turns to Leslie for comfort after seeing Penny with another guy.
User ratings: 2,297
Average rating: 8.3
S02E03
The Barbarian Sublimation
2008-10-06
Sheldon introduces Penny to online gaming, however she refuses to quit after becoming addicted.
User ratings: 2,686
Average rating: 8.9
S02E04
The Griffin Equivalency
2008-10-13
The guys struggle to cope with Raj's arrogance after he is featured in a People magazine article.
User ratings: 2,326
Average rating: 8.1
S02E05
The Euclid Alternative
2008-10-20
Sheldon annoys the gang when Leonard can't drive him to and from work, so they try to teach him how to drive.
User ratings: 2,387
Average rating: 8.5
S02E06
The Cooper-Nowitzki Theorem
2008-11-03
Sheldon is flattered when a graduate student takes a shine to him, however her extreme devotion becomes too much to handle.
User ratings: 2,407
Average rating: 8.4
S02E07
The Panty Piñata Polarization
2008-11-10
Penny plans revenge when Sheldon bans her from his and Leonard's apartment, while Howard and Raj use the latest technology to try to find the house being used in "America's Next Top Model."
User ratings: 2,576
Average rating: 8.8
S02E08
The Lizard-Spock Expansion
2008-11-17
Leonard and Howard's friendship is jeopardised when Leonard steals a girl from Howard.
User ratings: 2,305
Average rating: 8.3
S02E09
The White Asparagus Triangulation
2008-11-24
Sheldon believes that Leonard will wreck his relationship with Stephanie, so he decides to take matters into his own hands.
User ratings: 2,260
Average rating: 8.3
S02E10
The Vartabedian Conundrum
2008-12-08
Leonard tries to slow down his relationship with Stephanie when he realizes that they are living together, while Sheldon becomes convinced that he has an untraceable disease.
User ratings: 2,211
Average rating: 7.9
S02E11
The Bath Item Gift Hypothesis
2008-12-15
Leonard is disappointed when Penny develops an interest in an attractive physicist at the university. Meanwhile, Sheldon struggles to find an appropriate Christmas gift for Penny.
User ratings: 4,023
Average rating: 9.2
S02E12
The Killer Robot Instability
2009-01-12
Howard becomes depressed after Penny makes a cruel statement about his love life, while the rest of the guys prepare for a grudge killer robot duel against an obnoxious colleague at the university.
User ratings: 2,219
Average rating: 8.1
S02E13
The Friendship Algorithm
2009-01-19
Sheldon tries to make friends with Kripke in the hope that it will get him access to a coveted computer at the university.
User ratings: 2,242
Average rating: 8.2
S02E14
The Financial Permeability
2009-03-02
Leonard and Sheldon try to help out Penny when she can't afford to pay her rent.
User ratings: 2,201
Average rating: 8.2
S02E15
The Maternal Capacitance
2009-02-09
Sheldon hits it off with Leonard's psychoanalyst mother, but she drives Leonard and Penny to the bottle.
User ratings: 2,768
Average rating: 9.0
S02E16
The Cushion Saturation
2009-05-02
Howard hooks up with Leslie, while Penny accidentally ruins Sheldon's spot on the couch.
User ratings: 2,229
Average rating: 8.3
S02E17
The Terminator Decoupling
2009-03-09
On a train to San Francisco, Howard, Raj and Leonard fight for the affections of sci-fi star Summer Glau, while Sheldon is forced to turn to Penny for help when he leaves his flash drive behind.
User ratings: 2,447
Average rating: 8.4
S02E18
The Work Song Nanocluster
2009-03-16
Sheldon's assistance with Penny's home-based business leads to disaster.
User ratings: 2,244
Average rating: 8.3
S02E19
The Dead Hooker Juxtaposition
2009-03-30
Penny becomes jealous when a gorgeous new neighbor attracts the guys' attention.
User ratings: 2,283
Average rating: 8.4
S02E20
The Hofstadter Isotope
2009-04-13
Leonard is upset when Stuart from the comic book store begins dating Penny that he convinces Howard and Raj to take him to a bar so that he can pick up a woman of his own.
User ratings: 2,179
Average rating: 8.2
S02E21
The Vegas Renormalization
2009-04-27
After being dumped by Leslie, Howard heads to Las Vegas with Leonard and Raj. Meanwhile, Penny is forced to take in Sheldon after he locks himself out of his apartment.
User ratings: 2,391
Average rating: 8.7
S02E22
The Classified Materials Turbulence
2009-05-04
Penny's second date with Stuart has significant implications for Leonard. Howard enlists the guys' help with one of his NASA projects.
User ratings: 2,154
Average rating: 8.4
S02E23
The Monopolar Expedition
2009-05-11
Penny gets upset when she finds out Leonard and the guys plan to work at the North Pole for the summer.
User ratings: 2,218
Average rating: 8.4
S03E01
The Electric Can Opener Fluctuation
2009-09-21
After returning from the North Pole, a conflict among the guys sends Sheldon back to Texas and interferes with Leonard's reunion with Penny.
User ratings: 2,455
Average rating: 8.5
S03E02
The Jiminy Conjecture
2009-09-28
Leonard and Penny's first night together goes awkwardly. Sheldon and Howard wager on the species of a cricket.
User ratings: 2,166
Average rating: 8.0
S03E03
The Gothowitz Deviation
2009-10-05
Sheldon attempts to covertly alter Penny's habits, while Howard and Raj try their luck meeting women at a Goth-style club.
User ratings: 2,244
Average rating: 8.4
S03E04
The Pirate Solution
2009-10-12
When Raj has to find a new job or be sent back to India, Sheldon's solution leaves Leonard and Penny dealing with Howard as the third wheel.
User ratings: 2,177
Average rating: 8.2
S03E05
The Creepy Candy Coating Corollary
2009-10-19
Leonard is forced to ask Penny to set Howard up with one of her friends, while Sheldon seeks payback against sci-fi star Wil Wheaton.
User ratings: 2,212
Average rating: 8.4
S03E06
The Cornhusker Vortex
2009-11-02
Leonard tries to learn about football to fit in with Penny's friends. Meanwhile, a loss in a kite war threatens to end Raj and Howard's friendship.
User ratings: 2,075
Average rating: 7.7
S03E07
The Guitarist Amplification
2009-11-09
Sheldon is caught in the middle when Leonard and Penny argue about Penny's friend staying at her apartment.
User ratings: 2,068
Average rating: 8.0
S03E08
The Adhesive Duck Deficiency
2009-11-16
Penny is forced to turn to Sheldon for help when she dislocates her shoulder in the bathtub. Meanwhile, the rest of the guys accidentally get stoned in the desert while waiting for a meteor shower.
User ratings: 3,136
Average rating: 9.0
S03E09
The Vengeance Formulation
2009-11-23
Sheldon plans revenge after Kripke humiliates him on the radio. Howard develops doubts about his relationship with Bernadette.
User ratings: 2,245
Average rating: 8.5
S03E10
The Gorilla Experiment
2009-12-07
Sheldon attempts to help Penny understand physics to impress Leonard, while Howard becomes jealous when Bernadette takes an interest in Leonard's research.
User ratings: 2,270
Average rating: 8.6
S03E11
The Maternal Congruence
2009-12-14
Leonard's mother makes a visit to his dismay and Sheldon's delight.
User ratings: 2,159
Average rating: 8.4
S03E12
The Psychic Vortex
2010-01-11
Raj talks Sheldon into being his wingman at a university mixer. Leonard has trouble dealing with Penny consulting a psychic.
User ratings: 2,178
Average rating: 8.5
S03E13
The Bozeman Reaction
2010-01-18
When their apartment is robbed, Leonard and Sheldon turn to Howard and Raj to create a state-of-the-art security system.
User ratings: 2,088
Average rating: 8.2
S03E14
The Einstein Approximation
2010-02-01
Sheldon wreaks havoc when he is stumped by a difficult physics question.
User ratings: 2,307
Average rating: 8.6
S03E15
The Large Hadron Collision
2010-02-08
When Leonard is offered a trip to Switzerland on Valentine's Day to visit the CERN laboratory, Sheldon uses any and all means to be his guest instead of Penny.
User ratings: 2,034
Average rating: 8.2
S03E16
The Excelsior Acquisition
2010-03-01
Sheldon misses an opportunity to get Stan Lee's autograph because he has to make an appearance in traffic court.
User ratings: 2,121
Average rating: 8.4
S03E17
The Precious Fragmentation
2010-03-08
The guys' friendship is threatened when they find a ring from the "Lord of the Rings" trilogy.
User ratings: 2,281
Average rating: 8.6
S03E18
The Pants Alternative
2010-03-22
Sheldon seeks help from the rest of the gang in overcoming his fear of public speaking when he receives an award.
User ratings: 2,234
Average rating: 8.6
S03E19
The Wheaton Recurrence
2010-04-12
Sheldon takes on Wil Wheaton in a game of bowling. Leonard and Penny's relationship comes to a crossroad.
User ratings: 2,058
Average rating: 8.1
S03E20
The Spaghetti Catalyst
2010-05-03
Sheldon is forced to go behind Leonard's back to spend time with Penny following their breakup.
User ratings: 2,032
Average rating: 8.3
S03E21
The Plimpton Stimulation
2010-05-10
Chaos ensues when a nymphomaniac physicist visiting Sheldon hooks up with Leonard.
User ratings: 2,215
Average rating: 8.3
S03E22
The Staircase Implementation
2010-05-17
Leonard tells Penny about how he and Sheldon became roommates and what happened to the elevator.
User ratings: 3,081
Average rating: 9.1
S03E23
The Lunar Excitation
2010-05-24
Penny has a night of angry, drunken sex with Leonard, much to his confusion. Meanwhile, Howard and Raj search for Sheldon's perfect match online.
User ratings: 2,251
Average rating: 8.7
S04E01
The Robotic Manipulation
2010-09-23
Penny ends up tagging along on Sheldon's first ever date with Amy, while Howard finds an unusual use for a robotic arm.
User ratings: 2,622
Average rating: 8.8
S04E02
The Cruciferous Vegetable Amplification
2010-09-30
When Sheldon calculates the technology to download his consciousness into a robot won't be invented soon enough, he desperately tries to find a way to increase his lifespan.
User ratings: 2,322
Average rating: 8.5
S04E03
The Zazzy Substitution
2010-10-07
Following his 'breakup' with Amy, the gang become concerned with Sheldon's obsessive search for non-human companionship and call his mother to intervene.
User ratings: 2,130
Average rating: 8.1
S04E04
The Hot Troll Deviation
2010-10-14
Howard tries to get Penny's help in winning back Bernadette, but first has to confess the embarrassing reason why they broke up in the first place. Raj and Sheldon clash over a desk.
User ratings: 2,136
Average rating: 8.2
S04E05
The Desperation Emanation
2010-10-21
Sheldon is scared that he is in a relationship when Amy asks him to meet her mother, and Leonard asks Howard and Bernadette to set him up because he is the only person in the group without a girlfriend.
User ratings: 2,016
Average rating: 7.9
S04E06
The Irish Pub Formulation
2010-10-28
Leonard tries to keep everyone from finding out that he spent the night with Raj's sister, but Sheldon finds out and concocts an elaborate story to help him keep the secret from Raj.
User ratings: 2,057
Average rating: 8.2
S04E07
The Apology Insufficiency
2010-11-04
An FBI agent interviews the guys when Howard needs to obtain a security clearance.
User ratings: 2,087
Average rating: 8.2
S04E08
The 21-Second Excitation
2010-11-11
The guys camp out all night waiting to see an extended cut of Indiana Jones, while Amy joins in on girls' night with Penny and Bernadette.
User ratings: 2,057
Average rating: 8.3
S04E09
The Boyfriend Complexity
2010-11-18
Penny asks Leonard to pose as her boyfriend when her father visits. Howard, Raj and Bernadette have an awkward encounter when they spend the evening together.
User ratings: 2,188
Average rating: 8.6
S04E10
The Alien Parasite Hypothesis
2010-12-09
Amy finds she has sexual feelings for Penny's ex-boyfriend Zack, while Raj and Howard try to prove who would be the better superhero.
User ratings: 1,999
Average rating: 7.9
S04E11
The Justice League Recombination
2010-12-16
The guys enter a costume contest as members of the Justice League and convince Penny and Zack to join them.
User ratings: 2,383
Average rating: 8.8
S04E12
The Bus Pants Utilization
2011-01-06
Leonard has an idea for a new smartphone app and asks the guys for help, however Sheldon tries to take over the project, and Leonard fires him.
User ratings: 2,022
Average rating: 7.8
S04E13
The Love Car Displacement
2011-01-20
Chaos ensues when the gang spend the weekend together at a science convention.
User ratings: 2,176
Average rating: 8.4
S04E14
The Thespian Catalyst
2011-02-03
To improve his skills as an instructor, Sheldon asks Penny to give him acting lessons. Meanwhile, Raj begins having impure fantasies about Bernadette.
User ratings: 2,033
Average rating: 8.0
S04E15
The Benefactor Factor
2011-02-10
To secure needed funding for the university, Sheldon convinces Leonard to get friendly with a wealthy benefactor.
User ratings: 2,006
Average rating: 7.9
S04E16
The Cohabitation Formulation
2011-02-17
Bernadette makes Howard choose between herself and his mother, while Penny and Raj become upset when Priya returns to town and resumes her relationship with Leonard.
User ratings: 1,946
Average rating: 8.1
S04E17
The Toast Derivation
2011-02-24
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
User ratings: 1,978
Average rating: 8.1
S04E18
The Prestidigitation Approximation
2011-03-10
Priya forces Leonard to choose between a relationship with her or a friendship with Penny. A magic trick by Howard has Sheldon fooled.
User ratings: 2,084
Average rating: 8.3
S04E19
The Zarnecki Incursion
2011-03-31
The guys go all out to help Sheldon find the person responsible for hacking his online gaming account, while the girls' hatred for Priya increases.
User ratings: 2,001
Average rating: 8.2
S04E20
The Herb Garden Germination
2011-04-07
Sheldon and Amy secretly experiment on the gang by spreading rumors when they hear that Bernadette is thinking about breaking up with Howard.
User ratings: 1,997
Average rating: 8.4
S04E21
The Agreement Dissection
2011-04-28
When Priya finds a loophole in the roommate agreement to throw Sheldon out for the night, Penny, Amy and Bernadette take him to a nightclub.
User ratings: 2,038
Average rating: 8.4
S04E22
The Wildebeest Implementation
2011-05-05
Sheldon invents a three-player chess game, Penny and Amy use Bernadette to spy on Leonard and Priya, and Raj tries a new drug to treat his social anxiety.
User ratings: 1,937
Average rating: 8.0
S04E23
The Engagement Reaction
2011-05-12
Howard believes that his mom suffered a heart attack because he told her that he's marrying Bernadette, Sheldon freaks out over germs, and Penny and Priya bond.
User ratings: 1,960
Average rating: 8.2
S04E24
The Roommate Transmogrification
2011-05-19
Raj moves in with Sheldon after hearing Leonard and Priya engage in a Star Trek fantasy in his apartment. Bernadette receives her doctorate.
User ratings: 2,114
Average rating: 8.7
S05E01
The Skank Reflex Analysis
2011-09-22
The gang deal with the fallout from Penny and Raj's night together. Amy counsels Penny when she considers moving back to Nebraska, Bernadette confronts Raj about his crush on her, and Sheldon takes charge of the paintball team.
User ratings: 2,567
Average rating: 8.2
S05E02
The Infestation Hypothesis
2011-09-22
Amy gets inadvertently caught in the middle of a fight between Sheldon and Penny over a chair. Leonard tries to add some spice to his long-distance relationship with Priya.
User ratings: 2,149
Average rating: 8.2
S05E03
The Pulled Groin Extrapolation
2011-09-29
Leonard accompanies Amy to a colleague's wedding. Howard tries to convince Bernadette to live with his mother after they get married.
User ratings: 2,028
Average rating: 7.9
S05E04
The Wiggly Finger Catalyst
2011-10-06
Penny sets up Raj with a deaf friend, not knowing that she's actually a gold digger, and Sheldon decides to let his minor decisions rest on the roll of the dice.
User ratings: 2,076
Average rating: 8.0
S05E05
The Russian Rocket Reaction
2011-10-13
Sheldon takes offense when Leonard wants to attend a party with Wil Wheaton, while Bernadette tries to block Howard's opportunity to go into outer space.
User ratings: 2,043
Average rating: 8.2
S05E06
The Rhinitis Revelation
2011-10-20
Sheldon gets upset when his mother comes to visit but refuses to cook for him and attend physics lectures.
User ratings: 1,995
Average rating: 7.8
S05E07
The Good Guy Fluctuation
2011-10-27
Sheldon tries to get into the spirit of Halloween by trying to scare the guys after they prank him. Leonard seeks Penny's advice when an attractive comic book artist takes an interest in him.
User ratings: 2,596
Average rating: 8.7
S05E08
The Isolation Permutation
2011-11-03
Amy is hurt when Penny and Bernadette go bridesmaid dress shopping without her, so she turns to a reluctant Sheldon for comfort.
User ratings: 1,992
Average rating: 7.9
S05E09
The Ornithophobia Diffusion
2011-11-10
Sheldon tries to overcome his fear of birds, while Leonard and Penny attempt to hang out together strictly as friends.
User ratings: 2,088
Average rating: 8.3
S05E10
The Flaming Spittoon Acquisition
2011-11-17
When Stuart asks Amy on a date, Sheldon considers having a more serious relationship with her. Meanwhile, the guys become obsessed with a new card game involving Wild West heroes and witches.
User ratings: 2,042
Average rating: 8.1
S05E11
The Speckerman Recurrence
2011-12-08
Leonard confronts the man who bullied him in high school, while Penny realizes she did her fair share of tormenting in the past.
User ratings: 1,977
Average rating: 7.5
S05E12
The Shiny Trinket Maneuver
2012-01-12
Penny helps Sheldon work on his relationship with Amy when he trivializes one of her accomplishments. Howard is irked by Bernadette's dislike of children.
User ratings: 2,019
Average rating: 7.9
S05E13
The Recombination Hypothesis
2012-01-19
Leonard and Penny contemplate reviving their romantic relationship.
User ratings: 2,144
Average rating: 8.3
S05E14
The Beta Test Initiation
2012-01-26
Leonard and Penny develop a system to ensure their dates go smoothly. Raj finally finds a woman he can talk to - the virtual assistant on his mobile phone.
User ratings: 2,160
Average rating: 8.4
S05E15
The Friendship Contraction
2012-02-02
Leonard signs out of his roommate agreement, reducing himself and Sheldon to mere acquaintances, while Howard tries to think of a cool astronaut nickname for himself.
User ratings: 1,916
Average rating: 7.9
S05E16
The Vacation Solution
2012-02-09
When the university forces Sheldon to use vacation days, he decides to hang out in Amy's lab. Howard becomes upset when he hears Bernadette wants him to sign a prenuptial agreement.
User ratings: 1,903
Average rating: 7.8
S05E17
The Rothman Disintegration
2012-02-16
Sheldon battles Kripke for a coveted office at the university. Penny receives a very unusual gift from Amy.
User ratings: 1,955
Average rating: 8.0
S05E18
The Werewolf Transformation
2012-02-23
Sheldon wreaks havoc when he tries to get a haircut from his regular barber, who is ill. Howard runs into a few problems with astronaut training.
User ratings: 2,105
Average rating: 8.4
S05E19
The Weekend Vortex
2012-03-08
Sheldon has to choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
User ratings: 1,977
Average rating: 8.3
S05E20
The Transporter Malfunction
2012-03-29
Raj gets quite a surprise when he asks his parents to set him up on a date. Penny buys Leonard and Sheldon a pair of Star Trek keepsake collectibles.
User ratings: 2,107
Average rating: 8.3
S05E21
The Hawking Excitation
2012-04-05
Sheldon uses any and all means to meet his hero, Dr. Stephen Hawking.
User ratings: 2,406
Average rating: 8.7
S05E22
The Stag Convergence
2012-04-26
The guys throw Howard a bachelor party, and some embarrassing details about his life get posted on the Internet.
User ratings: 1,962
Average rating: 7.9
S05E23
The Launch Acceleration
2012-05-03
NASA cancel, and later reinstate Howard's mission into space, coinciding with his wedding. Leonard inadvertently jeopardizes his relationship with Penny.
User ratings: 1,920
Average rating: 8.3
S05E24
The Countdown Reflection
2012-05-10
As Howard prepares for his mission into space, flashbacks show the recent events leading up to his and Bernadette's wedding.
User ratings: 2,275
Average rating: 8.6
S06E01
The Date Night Variable
2012-09-27
Raj crashes Sheldon and Amy's second anniversary and interferes in Leonard and Penny's relationship. Howard gets caught in the middle of an argument between Bernadette and his mother.
User ratings: 2,830
Average rating: 7.8
S06E02
The Decoupling Fluctuation
2012-10-04
Penny continues to have doubts about her relationship with Leonard. Meanwhile, Howard becomes the target of practical jokes on the space station.
User ratings: 2,073
Average rating: 7.8
S06E03
The Higgs Boson Observation
2012-10-11
When Sheldon hires a female grad student to assist him, a jealous Amy asks Penny to help her spy on them. On the space station, Howard begins behaving erratically.
User ratings: 2,079
Average rating: 8.1
S06E04
The Re-Entry Minimization
2012-10-18
Howard is offended when his return from space is met with little fanfare. Penny and Amy take on Sheldon and Leonard during game night.
User ratings: 2,217
Average rating: 8.4
S06E05
The Holographic Excitation
2012-10-25
While Raj plans Stuart's Halloween party at the comic book store, Howard annoys the rest of the gang by constantly talking about space, and Penny tries to take more of an interest in Leonard's work.
User ratings: 2,039
Average rating: 8.2
S06E06
The Extract Obliteration
2012-11-01
Penny enrolls in a college class and keeps it a secret from Leonard. Sheldon causes conflict with Dr. Stephen Hawking over an online game.
User ratings: 1,950
Average rating: 8.0
S06E07
The Habitation Configuration
2012-11-08
Howard makes a decision whether or not to move out of his mother's house, while Sheldon is caught in the middle of an argument between Amy and Wil Wheaton.
User ratings: 1,915
Average rating: 7.9
S06E08
The 43 Peculiarity
2012-11-15
Leonard feels threatened after hearing about Penny's study partner at school, while Howard and Raj become determined to find out one of Sheldon's secrets.
User ratings: 2,315
Average rating: 8.6
S06E09
The Parking Spot Escalation
2012-11-29
The gang are drawn into a fight between Howard and Sheldon over Sheldon's vacant parking spot at the university.
User ratings: 2,195
Average rating: 8.4
S06E10
The Fish Guts Displacement
2012-12-06
Howard tries to bond with Bernadette's father during a fishing trip. When Sheldon is obligated to take care of a sick Amy, she finds ways to take advantage of the situation.
User ratings: 2,059
Average rating: 8.2
S06E11
The Santa Simulation
2012-12-13
The girls take Raj out to a nightclub to find him a date. A game of Dungeons and Dragons rekindle old memories of Santa for Sheldon.
User ratings: 1,975
Average rating: 8.0
S06E12
The Egg Salad Equivalency
2013-01-03
When Penny finds out Alex has a crush on Leonard, Sheldon gets himself and the rest of the guys in trouble with Human Resources whilst trying to solve the problem.
User ratings: 2,285
Average rating: 8.6
S06E13
The Bakersfield Expedition
2013-01-10
The guys are stranded in the middle of nowhere when Leonard's car is stolen on the way to the Bakersfield Comic-Con. Back home, the girls try to figure out why the guys are so fascinated with comic books.
User ratings: 2,286
Average rating: 8.5
S06E14
The Cooper/Kripke Inversion
2013-01-31
Sheldon is forced to work with Kripke on a project and must concoct an elaborate lie when he can't hold up his end of the work. Howard and Raj get superhero figurines made of themselves.
User ratings: 1,986
Average rating: 8.0
S06E15
The Spoiler Alert Segmentation
2013-02-07
Leonard moves in with Penny after a fight with Sheldon, which causes Amy to want to move in with Sheldon. Meanwhile, Raj has a frightening experience with Howard's mother.
User ratings: 2,055
Average rating: 8.4
S06E16
The Tangible Affection Proof
2013-02-14
Sheldon gets Alex to buy a Valentine's Day gift for Amy. Leonard and Penny and Howard and Bernadette have a disastrous dinner together. Raj and Stuart host a "Lonely People" party at the comic book store.
User ratings: 1,990
Average rating: 8.1
S06E17
The Monster Isolation
2013-02-21
Raj falls apart after his date sneaks out on him, and Sheldon reluctantly returns the favor after Penny helps him out with his "Fun With Flags" program.
User ratings: 1,872
Average rating: 7.8
S06E18
The Contractual Obligation Implementation
2013-03-07
Leonard, Sheldon and Howard give lectures on science to junior high students. The girls ditch work to go to Disneyland. Raj devises a date for Lucy that fixes their social anxiety problems.
User ratings: 1,927
Average rating: 7.9
S06E19
The Closet Reconfiguration
2013-03-14
Howard becomes upset when Sheldon finds a letter from his estranged father whilst cleaning out his and Bernadette's closet.
User ratings: 2,027
Average rating: 8.2
S06E20
The Tenure Turbulence
2013-04-04
Leonard, Sheldon, Raj and Kripke battle for tenure at the university.
User ratings: 1,984
Average rating: 8.2
S06E21
The Closure Alternative
2013-04-25
Amy tries to help a depressed Sheldon find closure when one of his favorite TV shows is canceled. Raj becomes paranoid when he finds Lucy's blog.
User ratings: 1,912
Average rating: 8.1
S06E22
The Proton Resurgence
2013-05-02
Bernadette and Howard offer to watch Raj's dog and live to regret it. Leonard and Sheldon hire their favorite childhood star to make an appearance.
User ratings: 2,000
Average rating: 8.0
S06E23
The Love Spell Potential
2013-05-09
A date between Raj and Lucy takes both of them out of their comfort zones. After a trip to Las Vegas goes awry, the girls join in on a Dungeons and Dragons game, which causes Amy and Sheldon to re-evaluate their relationship.
User ratings: 2,037
Average rating: 8.2
S06E24
The Bon Voyage Reaction
2013-05-16
Penny is thrown for a loop when Leonard is offered a job overseas, but the news is an even bigger shock to Sheldon. Raj and Lucy's relationship comes to a crossroad.
User ratings: 1,926
Average rating: 7.9
S07E01
The Hofstadter Insufficiency
2013-09-26
Sheldon and Penny bond over missing Leonard. Howard tries to help Raj get over his breakup with Lucy. Amy and Bernadette take a trip together to a biology convention.
User ratings: 2,307
Average rating: 8.0
S07E02
The Deception Verification
2013-09-26
Sheldon feels betrayed when Leonard returns from the North Sea and wants to spend his time with Penny instead of him. Howard's latest foray into helping his mother has some disastrous side effects.
User ratings: 2,244
Average rating: 8.2
S07E03
The Scavenger Vortex
2013-10-03
The gang get competitive when they are forced to take part in Raj's scavenger hunt.
User ratings: 2,673
Average rating: 8.8
S07E04
The Raiders Minimization
2013-10-10
Sheldon gets mad at Amy for ruining one of his favorite movies, Raj and Stuart try to make their online dating profiles more appealing, and Leonard tries to play the sympathy card with Penny.
User ratings: 1,993
Average rating: 8.1
S07E05
The Workplace Proximity
2013-10-17
After a fight with Bernadette, Howard ends up on Raj's couch. Sheldon and Amy clash when Amy takes a job at the university.
User ratings: 1,894
Average rating: 7.9
S07E06
The Romance Resonance
2013-10-24
Howard tries to do something special to celebrate the anniversary of his first date with Bernadette. Sheldon is conflicted when he makes a major scientific breakthrough but some details have to be corrected.
User ratings: 2,279
Average rating: 8.5
S07E07
The Proton Displacement
2013-11-07
Sheldon seeks payback when Arthur "Professor Proton" Jeffries asks Leonard for help on a project instead of him. Raj gets upset at Howard for crashing his night with the girls.
User ratings: 1,925
Average rating: 7.9
S07E08
The Itchy Brain Simulation
2013-11-14
Sheldon demands Leonard make up for a mistake from their past. Penny confronts Raj's ex-girlfriend, Lucy.
User ratings: 1,914
Average rating: 7.8
S07E09
The Thanksgiving Decoupling
2013-11-21
The gang spend Thanksgiving at Mrs. Wolowitz's house. Howard tries to bond with his father-in-law, and a mistake from Penny's past comes back to haunt her.
User ratings: 2,758
Average rating: 8.9
S07E10
The Discovery Dissipation
2013-12-05
Leonard has to deal with the fallout of disproving Sheldon's new scientific discovery. Raj spends a week at Howard and Bernadette's apartment.
User ratings: 1,809
Average rating: 7.8
S07E11
The Cooper Extraction
2013-12-12
While Sheldon is at home in Texas, the rest of the gang decorate for Christmas and think about how much he has affected their lives.
User ratings: 2,043
Average rating: 8.3
S07E12
The Hesitation Ramification
2014-01-02
After Leonard tries to help Penny following a failed role on a TV show, she makes an important decision. Meanwhile, Raj and Stuart try to practice their social skills, and Sheldon navigates the intricacies of being funny.
User ratings: 1,888
Average rating: 7.6
S07E13
The Occupation Recalibration
2014-01-09
Sheldon tries to relax after he is forced to take a vacation. Leonard struggles to be supportive of Penny after she quits her job. Amy receives unwanted attention from a co-worker. Bernadette seeks Stuart's help in replacing one of Howard's comic books.
User ratings: 1,866
Average rating: 7.7
S07E14
The Convention Conundrum
2014-01-30
When the guys can't get hold of any Comic-Con tickets, Sheldon tries to hold his own convention and ends up spending a wild night with James Earl Jones. Meanwhile, the girls try to feel more mature by going to a fancy hotel for tea.
User ratings: 2,004
Average rating: 8.1
S07E15
The Locomotive Manipulation
2014-02-06
Sheldon and Amy take a train ride to Napa Valley with Howard and Bernadette on Valentine's Day. Leonard and Penny take Raj's dog to the vet when she accidentally eats some chocolate.
User ratings: 2,200
Average rating: 8.4
S07E16
The Table Polarization
2014-02-27
Leonard's purchase of a dining room table causes Sheldon to reevaluate the changes in his life. Meanwhile, Howard is offered a chance to go back to space and Bernadette struggles with whether or not to encourage him.
User ratings: 1,781
Average rating: 7.8
S07E17
The Friendship Turbulence
2014-03-06
After arguing with Sheldon, Howard tries to make amends by taking him to NASA headquarters in Houston. Penny has second thoughts about quitting her waitressing job when her car dies. Amy gets involved in trying to find Raj a date.
User ratings: 1,758
Average rating: 7.6
S07E18
The Mommy Observation
2014-03-13
When Sheldon visits his mother in Houston, he is forced to confront a new reality. Back in Pasadena, the rest of the gang reluctantly take part in Raj's Murder Mystery party.
User ratings: 1,806
Average rating: 7.6
S07E19
The Indecision Amalgamation
2014-04-03
While Raj is wracked with guilt when he tries to date Lucy and Emily at the same time, Penny wrestles with whether to take a role in a cheesy movie and Sheldon is torn trying to choose between two gaming systems.
User ratings: 1,997
Average rating: 8.3
S07E20
The Relationship Diremption
2014-04-10
Penny tries to help Sheldon when he reconsiders his "relationship" with String Theory. During a dinner with Howard and Bernadette, Raj discovers Howard once embarrassed himself on a date with Emily.
User ratings: 1,834
Average rating: 8.2
S07E21
The Anything Can Happen Recurrence
2014-04-24
When Sheldon tries to be spontaneous, it leads to unexpected friction between the girls. Meanwhile, Raj seeks Howard's help in preparing for a date with Emily.
User ratings: 1,726
Average rating: 7.7
S07E22
The Proton Transmogrification
2014-05-01
As the gang celebrate Star Wars Day, Sheldon has difficulty dealing with the recent death of Arthur "Professor Proton" Jeffries.
User ratings: 1,816
Average rating: 7.8
S07E23
The Gorilla Dissolution
2014-05-08
Penny gets fired from her movie and takes a serious look at her life. Raj sees Emily on a date with another man at the movies. Howard and Bernadette have to take care of his mother after she breaks her leg.
User ratings: 1,840
Average rating: 8.0
S07E24
The Status Quo Combustion
2014-05-15
Sheldon gets upset about his career, the destruction of the comic book store and Leonard and Penny's future living arrangements. Howard and Bernadette struggle to keep hold of a caregiver for Mrs. Wolowitz.
User ratings: 1,891
Average rating: 8.1
S08E01
The Locomotion Interruption
2014-09-22
Sheldon's trip comes to an end when he is robbed, Penny interviews for a job at Bernadette's company, and Howard is weirded out by his mother's relationship with Stuart.
User ratings: 2,368
Average rating: 7.2
S08E02
The Junior Professor Solution
2014-09-22
Sheldon is forced to teach a class as a Junior Professor. Meanwhile, Amy plays both sides when tension arises between Penny and Bernadette.
User ratings: 2,137
Average rating: 7.7
S08E03
The First Pitch Insufficiency
2014-09-29
Howard becomes nervous after NASA asks him to throw out the first pitch at a Los Angeles Angels game. Meanwhile, Leonard and Penny try to prove Sheldon wrong when he says that he and Amy have a 'superior' relationship.
User ratings: 2,064
Average rating: 7.1
S08E04
The Hook-up Reverberation
2014-10-06
Raj's honesty about his past comes back to haunt him after Emily takes a dislike to Penny. Meanwhile, the guys consider investing in the comic book store.
User ratings: 1,926
Average rating: 7.3
S08E05
The Focus Attenuation
2014-10-13
The girls head to Las Vegas, while the guys try to invent something cool, but only come up with new ways to procrastinate.
User ratings: 1,956
Average rating: 7.5
S08E06
The Expedition Approximation
2014-10-20
Sheldon and Raj test whether they could survive a dark-matter research expedition in a salt mine by simulating the conditions in a steam tunnel. Meanwhile, Leonard and Penny seek advice from Howard and Bernadette when they argue about money.
User ratings: 1,869
Average rating: 7.3
S08E07
The Misinterpretation Agitation
2014-10-30
The guys befriend one of Penny's clients when he shows up at her apartment. Meanwhile, Bernadette gets upset when Amy torpedoes an article about her for a local magazine.
User ratings: 2,076
Average rating: 7.8
S08E08
The Prom Equivalency
2014-11-06
The girls decide to re-enact their high school proms with the guys. While Sheldon feels under pressure to commit to his relationship with Amy, Howard worries about who Stuart will bring as his date.
User ratings: 2,043
Average rating: 8.1
S08E09
The Septum Deviation
2014-11-13
Sheldon panics when Leonard announces he has to go into the hospital for surgery. Raj discovers his parents have divorced.
User ratings: 1,782
Average rating: 7.6
S08E10
The Champagne Reflection
2014-11-20
While Sheldon retires "Fun With Flags", Leonard, Howard and Raj look for something significant in a dead professor's research, and Bernadette finds out what her colleagues really think of her.
User ratings: 1,868
Average rating: 7.0
S08E11
The Clean Room Infiltration
2014-12-11
Amy hosts a traditional Victorian Christmas Eve dinner as Raj's father comes to visit, while the guys try to shoo out a bird they let into the university clean room.
User ratings: 1,742
Average rating: 7.4
S08E12
The Space Probe Disintegration
2015-01-08
Raj worries a probe he designed will not work in outer space, while Leonard and Sheldon go shopping with Penny and Amy.
User ratings: 1,672
Average rating: 7.3
S08E13
The Anxiety Optimization
2015-01-29
When Sheldon becomes stuck in a rut with his work, the gang try to help him by raising his stress levels. Howard teases Raj with a game called "Emily or Cinnamon."
User ratings: 1,672
Average rating: 7.5
S08E14
The Troll Manifestation
2015-02-05
Leonard and Sheldon defend themselves against criticism from an online bully, while the girls confront embarrassing moments from their pasts.
User ratings: 1,841
Average rating: 8.1
S08E15
The Comic Book Store Regeneration
2015-02-19
Howard receives some shocking news as everyone prepares for the re-opening of the comic book store. Meanwhile, Penny tries to teach Sheldon how to "let it go," but can't follow her own advice when she learns something infuriating about Amy.
User ratings: 1,815
Average rating: 8.1
S08E16
The Intimacy Acceleration
2015-02-26
Sheldon and Penny agree to participate in an unusual experiment. Leonard, Amy, Raj and Emily spend the evening trying to escape a room with a "zombie". Howard and Bernadette run into trouble at the airport after returning from Mrs. Wolowitz's funeral.
User ratings: 1,737
Average rating: 8.0
S08E17
The Colonization Application
2015-03-05
A trip to the pet store ends in a fight after Amy learns Sheldon has applied for a one-way mission to colonize Mars. Meanwhile, Leonard surprises Penny with a very "adult" purchase, and Raj gets into trouble when he snoops around Emily's apartment.
User ratings: 1,633
Average rating: 7.7
S08E18
The Leftover Thermalization
2015-03-12
Tension arises when a magazine fails to mention Leonard in an article about the paper he co-wrote with Sheldon, and a blackout at Mrs. Wolowitz's home leads to a final family dinner in her honor.
User ratings: 1,607
Average rating: 7.4
S08E19
The Skywalker Incursion
2015-04-02
Leonard and Sheldon have been invited to present their joint paper at UC-Berkeley. As they have plenty of time on the drive to Berkeley, they decide to stop by George Lucas' Skywalker Ranch, with Leonard's expectation that they will end up seeing what they can see through the gates, while Sheldon's expectation is that they will meet Lucas himself. They have to come up with a plan to achieve Sheldon's goal... or not. Meanwhile, Howard, Bernadette, Penny, Amy and Raj are cleaning out Mrs. Wolowitz's garage and deciding what they should sell at the ensuing garage sale. Two of items found are Howard's TARDIS and a ping pong table, the latter which ends up being the battleground on what happens to the former, with a little psychology thrown in.
User ratings: 1,597
Average rating: 7.7
S08E20
The Fortification Implementation
2015-04-09
Howard meets the half-brother he never knew he had. Penny is invited to appear on Wil Wheaton's podcast.
User ratings: 1,584
Average rating: 7.6
S08E21
The Communication Deterioration
2015-04-16
When Raj is asked to create a message on the off chance a NASA mission discovers alien life, the guys fight over what he should do, while Penny contemplates returning to acting.
User ratings: 1,584
Average rating: 7.2
S08E22
The Graduation Transmission
2015-04-23
Howard questions his engineering abilities when he and Sheldon can't get a toy drone to fly. A cancelled flight nearly prevents Leonard from giving the commencement address at his former high school. Raj pits his parents against each other when his father cuts him off financially.
User ratings: 1,595
Average rating: 7.4
S08E23
The Maternal Combustion
2015-04-30
Personalities collide when Leonard and Sheldon's mothers meet for the first time. Bernadette reaches her limit with Howard and Stuart.
User ratings: 1,629
Average rating: 7.6
S08E24
The Commitment Determination
2015-05-07
As Sheldon presses Leonard and Penny to set a wedding date, he encounters major changes in his relationship with Amy. Meanwhile, Raj wonders if he should break up with Emily, and Howard and Bernadette struggle to ask Stuart to move out.
User ratings: 1,990
Average rating: 8.1
S09E01
The Matrimonial Momentum
2015-09-21
Penny struggles with Leonard's confession that he kissed another woman as they prepare to get married in Las Vegas. Meanwhile, Sheldon doesn't know what to do after Amy pushes pause on their relationship.
User ratings: 2,331
Average rating: 6.8
S09E02
The Separation Oscillation
2015-09-28
Leonard tries to ease Penny's mind as she becomes more concerned about his kiss with another girl at sea. Sheldon plans a special episode of "Fun With Flags" shortly after his break up with Amy. Bernadette feels bad about keeping a secret.
User ratings: 1,861
Average rating: 7.5
S09E03
The Bachelor Party Corrosion
2015-10-05
The guys's skills are put to the test when they get a flat tire on the way to Mexico for Leonard's bachelor party. The girls throw Penny a mini-bachelorette party.
User ratings: 1,865
Average rating: 7.8
S09E04
The 2003 Approximation
2015-10-12
An impending change to his living arrangements inspires Sheldon to revert to 2003, before he met Penny and Leonard. Raj and Howard form a band for the comic book store.
User ratings: 1,738
Average rating: 7.5
S09E05
The Perspiration Implementation
2015-10-19
Kripke expresses interest in Amy while leading a fencing lesson for the guys. Meanwhile, Stuart seeks help from the girls in getting more women interested in the comic book store.
User ratings: 1,650
Average rating: 7.6
S09E06
The Helium Insufficiency
2015-10-26
Leonard and Sheldon go to great lengths to secure the helium they need during a nation-wide shortage. Meanwhile, the rest of the gang try to find Amy a new boyfriend on a dating app.
User ratings: 1,702
Average rating: 7.3
S09E07
The Spock Resonance
2015-11-05
While being interviewed for a documentary about Spock from Star Trek (1966), Sheldon struggles to suppress his emotions about his recent break-up from Amy. Meanwhile, Howard and Bernadette butt heads over renovating his mother's house.
User ratings: 1,742
Average rating: 8.1
S09E08
The Mystery Date Observation
2015-11-12
Sheldon, Howard and Raj post an ad online to find a new girlfriend for Sheldon. Penny and Bernadette decide to spy when Amy is secretive about who she is dating.
User ratings: 1,750
Average rating: 8.1
S09E09
The Platonic Permutation
2015-11-19
Sheldon is looking for someone to take his second ticket to the aquarium's annual Thanksgiving buffet lunch, which he would have normally gone to with Amy. Leonard and Penny already have plans in that that are cooking all day for the group's Thanksgiving dinner. In the process of preparing the meal, Leonard and Penny learn that he knows almost everything about her but that she in return knows little about him, even the basics. Penny trying to become a better wife to match Leonard's care in knowledge about the other takes a turn when Penny learns how he gleaned some of that information. Bernadette and Raj can't go with Sheldon as they and Emily had long ago decided to volunteer for a six hour shift at the soup kitchen that day. Howard also volunteers to go with them just to get out of the lunch with Sheldon, although he kicks and screams all the way. As the three abandon Howard in the kitchen alone while they go work the "front of the house" line, Howard may come to a new appreciation about the meaning of Thanksgiving in how it affects his own life based on a chance encounter. With no one to go to the aquarium with him, Sheldon decides to give both tickets to Amy for her to take whomever she pleases. She proposes that they go together solely as friends. Their outing will show if they can be just friends, and not boyfriend/girlfriend.
User ratings: 1,690
Average rating: 8.0
S09E10
The Earworm Reverberation
2015-12-10
Sheldon has a revelation when he realizes why a song was stuck in his head. Meanwhile, Amy invites Dave over for dinner despite their previously awkward date, and Howard and Raj become obsessed with a fan of their band.
User ratings: 1,996
Average rating: 8.4
S09E11
The Opening Night Excitation
2015-12-17
Leonard, Howard and Raj have to decide who will take their extra Star Wars movie ticket, while Sheldon plans something special for Amy's birthday.
User ratings: 3,368
Average rating: 9.2
S09E12
The Sales Call Sublimation
2016-01-07
Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf to make a sale. Meanwhile, Sheldon and Raj collaborate on an astronomical discovery, and Howard and Bernadette's happiness is short-lived after Stuart moves out.
User ratings: 1,548
Average rating: 7.5
S09E13
The Empathy Optimization
2016-01-14
After being forced to deal with a sick Sheldon, the rest of the gang try to treat themselves to a Sheldon-free weekend.
User ratings: 1,552
Average rating: 7.5
S09E14
The Meemaw Materialization
2016-02-04
Sheldon is thrilled when his Meemaw comes to visit, but his excitement quickly fades when she butts heads with Amy. Meanwhile, Raj meets a girl at the comic book store who makes him question his relationship with Emily.
User ratings: 1,548
Average rating: 7.7
S09E15
The Valentino Submergence
2016-02-11
Sheldon and Amy host a Valentine's Day episode of "Fun with Flags", Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and Claire.
User ratings: 1,520
Average rating: 7.6
S09E16
The Positive Negative Reaction
2016-02-18
Bernadette reveals her pregnancy to Howard and the rest of the gang.
User ratings: 1,589
Average rating: 7.4
S09E17
The Celebration Experimentation
2016-02-25
The gang convince Sheldon to celebrate his birthday and throw him a party.
User ratings: 1,593
Average rating: 7.5
S09E18
The Application Deterioration
2016-03-10
Leonard, Sheldon, and Howard run into problems when they file for a patent for their infinite persistence gyroscope. Meanwhile, the girls give Raj dating advice when Emily reaches out to him after their breakup.
User ratings: 1,504
Average rating: 7.6
S09E19
The Solder Excursion Diversion
2016-03-31
Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Meanwhile, Raj sells out Leonard and Howard after they lie to their wives in order to attend an early screening of a movie.
User ratings: 1,408
Average rating: 7.6
S09E20
The Big Bear Precipitation
2016-04-07
Secrets are revealed when Amy and Sheldon join Penny and Leonard on a weekend cabin trip. Raj is more excited about Howard's and Bernadette's impending parenthood than they are.
User ratings: 1,378
Average rating: 7.5
S09E21
The Viewing Party Combustion
2016-04-21
The gang pick sides when a small argument between Leonard and Sheldon erupts into a heated fight during a "Game of Thrones" viewing party.
User ratings: 1,392
Average rating: 7.6
S09E22
The Fermentation Bifurcation
2016-04-28
Sheldon and Bernadette spend the evening together while the rest of the gang go to a wine tasting party, but things get uncomfortable for Raj when Penny's ex-boyfriend Zack shows up and takes an interest in Claire.
User ratings: 1,329
Average rating: 7.6
S09E23
The Line Substitution Solution
2016-05-05
Sheldon hires Stuart to spend the day with Amy when he would rather go to the movies. Meanwhile, Penny struggles to make a connection with Leonard's mother when she comes to visit.
User ratings: 1,342
Average rating: 7.5
S09E24
The Convergence Convergence
2016-05-12
Leonard and Penny try to have a wedding ceremony that everyone can attend, but it creates serious conflict among Sheldon's mother and Leonard's divorced parents. Meanwhile, Howard and Raj become convinced the government is out to get them.
User ratings: 1,577
Average rating: 7.8
S10E01
The Conjugal Conjecture
2016-09-19
As Leonard and Penny attempt to hold another wedding ceremony everyone can attend, they have to deal with Penny's family arriving and Leonard's father spending the night with Sheldon's mother.
User ratings: 1,961
Average rating: 7.8
S10E02
The Military Miniaturization
2016-09-26
Howard is visited by an Air Force colonel regarding his invention. Penny accidentally lets it slip to her co-workers Bernadette's secret that she is pregnant.
User ratings: 1,480
Average rating: 7.5
S10E03
The Dependence Transcendence
2016-10-03
Bernadette confides to Raj she isn't sure if she's ready to be a mother. Penny accompanies Amy to a university mixer, and Sheldon goes to unusual extremes to assist Howard with his military project.
User ratings: 1,394
Average rating: 7.4
S10E04
The Cohabitation Experimentation
2016-10-10
When Amy must vacate her apartment for repairs, living arrangements are made with Leonard, Sheldon, and Penny. Howard and Bernadette don't want to know the sex of their baby, but Raj finds out.
User ratings: 1,569
Average rating: 8.1
S10E05
The Hot Tub Contamination
2016-10-17
Sheldon and Amy go through a period of adjustment with their new living arrangement. Howard and Bernadette are forced to vacation at home when she falls ill and keep it a secret, unaware Raj and Stuart planned to use their hot tub.
User ratings: 1,366
Average rating: 7.5
S10E06
The Fetal Kick Catalyst
2016-10-27
Sheldon and Amy host a brunch. Penny is surprised by her popularity when her movie, Serial Apeist, is featured at a Van Nuys comic book convention.
User ratings: 1,389
Average rating: 7.5
S10E07
The Veracity Elasticity
2016-11-03
Amy neglects to tell Sheldon her apartment has been repaired. Leonard and Penny discuss what is to be done with Sheldon's room, but Leonard becomes more upset that Penny's been storing away his collectibles.
User ratings: 1,480
Average rating: 8.1
S10E08
The Brain Bowl Incubation
2016-11-10
A proposition by Sheldon shocks Amy. Raj takes an interest in someone at the university.
User ratings: 1,556
Average rating: 8.2
S10E09
The Geology Elevation
2016-11-17
Sheldon can't contain his jealousy when Bert from the Geology Department wins the MacArthur Genius Grant. A toy Howard finds faces judgment by everyone.
User ratings: 1,298
Average rating: 7.6
S10E10
The Property Division Collision
2016-12-01
Dividing up their possessions becomes an all-out war between Leonard and Sheldon. Stuart asks to live with Howard and Bernadette and tries to supplant Raj's efforts to help with the new baby.
User ratings: 1,300
Average rating: 7.5
S10E11
The Birthday Synchronicity
2016-12-15
Amy's desire to have an intimate night with Sheldon on her birthday is interrupted by Bernadette going into labor.
User ratings: 1,338
Average rating: 7.6
S10E12
The Holiday Summation
2017-01-05
After spending the holidays apart, the gang gets together to hear about Sheldon's and Amy's trip to his mother's, Leonard's and Penny's Christmas tree adventure, and Howard's and Bernadette's first days as parents.
User ratings: 1,357
Average rating: 7.4
S10E13
The Romance Recalibration
2017-01-19
Leonard and Penny ask for Sheldon's and Amy's help on putting the romance back in their marriage. Howard and Raj go to extreme lengths to stop the floor in Halley's bedroom from making noise.
User ratings: 1,262
Average rating: 7.0
S10E14
The Emotion Detection Automation
2017-02-02
Penny wants to help her brother get a job with her company. Sheldon learns of a machine that will help him understand human emotions. Raj reunites some of his old girlfriends to figure out why he is still single.
User ratings: 1,227
Average rating: 7.3
S10E15
The Locomotion Reverberation
2017-02-09
Leonard and Howard's attempt to keep Sheldon away from their Air Force project by sending him on a train trip backfires. Penny and Amy take Bernadette for her first night out since having the baby.
User ratings: 1,202
Average rating: 7.3
S10E16
The Allowance Evaporation
2017-02-16
Sheldon and Amy have their first fight since moving in together. Meanwhile Raj is shocked at the reality of financial independence when he stops receiving support from his father.
User ratings: 1,152
Average rating: 7.2
S10E17
The Comic-Con Conundrum
2017-02-23
The guys' annual trip to Comic Con is in doubt when Raj can't afford to go.
User ratings: 1,178
Average rating: 7.6
S10E18
The Escape Hatch Identification
2017-03-09
When the gang offers a place for Raj to live, it creates unexpected conflict among everyone and an argument between Amy and Leonard's mother.
User ratings: 1,138
Average rating: 7.2
S10E19
The Collaboration Fluctuation
2017-03-30
Leonard, Penny and Raj adjust to their new living arrangements; Sheldon expresses an interest in Amy's work.
User ratings: 1,159
Average rating: 7.1
S10E20
The Recollection Dissipation
2017-04-06
Sheldon reaches his limit when he works on projects with Leonard, Wolowitz and Amy in one day.
User ratings: 1,110
Average rating: 7.2
S10E21
The Separation Agitation
2017-04-13
Howard and Bernadette have a hard time leaving Halley in daycare when Bernadette returns to work. Also, Bert introduces the gang to his new girlfriend, Rebecca.
User ratings: 1,145
Average rating: 7.3
S10E22
The Cognition Regeneration
2017-04-27
Leonard is less than thrilled when Penny considers accepting a job offer from Zack, her ex-boyfriend. Howard teaches Sheldon new things.
User ratings: 1,078
Average rating: 6.8
S10E23
The Gyroscopic Collapse
2017-05-04
After celebrating the completion of the top-secret Air Force project, Leonard, Sheldon and Wolowitz get an unwelcome surprise; Amy receives an offer for a summer position as a visiting researcher.
User ratings: 1,087
Average rating: 7.1
S10E24
The Long Distance Dissonance
2017-05-11
The gang is concerned when Sheldon's former admirer, Dr. Ramona Nowitzki, resurfaces while Amy is away at Princeton.
User ratings: 1,696
Average rating: 8.6
S11E01
The Proposal Proposal
2017-09-25
Amy has trouble deciding whether or not she should marry Sheldon. Meanwhile, Bernadette confides in Penny when she finds out some huge news.
User ratings: 1,384
Average rating: 7.7
S11E02
The Retraction Reaction
2017-10-02
Leonard angers the University and the Physics Community when he gives an embarrassing radio interview. Bernadette and Amy talk about their success. After the embarrassing radio interview Penny comforts her husband.
User ratings: 1,131
Average rating: 7.3
S11E03
The Relaxation Integration
2017-10-09
Sheldon and Amy struggle with picking a wedding date. Amy wants it near a cliff which Sheldon doesn't want. Meanwhile Stuart and Raj fight over one of Bernadette's co-workers for a date.
User ratings: 1,031
Average rating: 7.1
S11E04
The Explosion Implosion
2017-10-16
Leonard is devastated by the new friendly relation developing between his mother and Penny. Meanwhile Sheldon takes a detour with Raj and Howard to explore the old belongings of Howard's Science Models.
User ratings: 978
Average rating: 7.2
S11E05
The Collaboration Contamination
2017-10-23
Amy and Howard work in the lab together causing Sheldon, Bernadette and Raj to feel jealous and lonely. Penny and Leonard use a parenting book to control Sheldon's behavior.
User ratings: 982
Average rating: 7.4
S11E06
The Proton Regeneration
2017-11-02
Sheldon and Wil Wheaton both go head-to-head for the role of the new Professor Proton, Meanwhile Penny takes care of Halley when Bernadette and Howard are on bed rest.
User ratings: 958
Average rating: 7.3
S11E07
The Geology Methodology
2017-11-09
Bert asks Sheldon to collaborate on a project with him, Sheldon becomes dubious others finding out because he thinks geology is beneath him. Raj begins dating Bernadette's Indian coworker.
User ratings: 968
Average rating: 7.5
S11E08
The Tesla Recoil
2017-11-16
Howard and Leonard become upset after they discover that Sheldon has been working with the military without telling them; Bernadette asks Raj to investigate her suspicions that Ruchi is attempting to take her job away from her.
User ratings: 903
Average rating: 7.2
S11E09
The Bitcoin Entanglement
2017-11-30
Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable Bitcoin investment. Also, a seven-year-old video reveals a secret about Leonard and Penny's relationship.
User ratings: 997
Average rating: 7.8
S11E10
The Confidence Erosion
2017-12-07
Sheldon and Amy try to eliminate stress from wedding planning by applying math to the process ending up at city hall. Also, Raj "breaks up" with Howard after realizing his best friend is actually hurting his confidence.
User ratings: 890
Average rating: 7.4
S11E11
The Celebration Reverberation
2017-12-14
Sheldon and Wolowitz plan birthday celebrations for Amy and Halley, respectively. But later things go wrong. Amy and Sheldon get sick during the party and Raj help Wolowitz plan for the but later on things went wrong when they quarrel which put their friendship in jeopardy but later they find ways to get along.
User ratings: 841
Average rating: 7.1
S11E12
The Matrimonial Metric
2018-01-04
Sheldon and Amy pick their best-man and maid of honor, by doing tricky experiments on their friends. This causes uproar in the group. Meanwhile, Leonard's self-confidence is still badly damaged after reading his brother's Christmas letter.
User ratings: 857
Average rating: 7.5
S11E13
The Solo Oscillation
2018-01-11
Sheldon kicks Amy out to work solo, so she and Leonard bond during a series of science experiments; Howard is replaced by Bert in Footprints on the Moon; Penny proves to be a surprising source of scientific inspiration for Sheldon. Howard and Raj start a band.
User ratings: 847
Average rating: 7.3
S11E14
The Separation Triangulation
2018-01-18
Raj meets a girl who is his new love but meanwhile finds something about her that he did not realize.
User ratings: 863
Average rating: 7.3
S11E15
The Novelization Correlation
2018-02-01
Leonard's book raises questions, and Amy guest stars on the new Professor Proton show.
User ratings: 792
Average rating: 7.6
S11E16
The Neonatal Nomenclature
2018-03-01
When Bernadette won't go into labor, the gang try different tactics to get things started. Also, Wolowitz confronts Bernadette after Amy accidentally reveals she's already chosen their son's name.
User ratings: 725
Average rating: 7.2
S11E17
The Athenaeum Allocation
2018-03-08
Leonard jumps through hoops to help secure the perfect wedding venue for Sheldon and Amy. Also, Bernadette and Wolowitz have a hard time deciding who should stay at home with the kids and who should go back to work.
User ratings: 730
Average rating: 6.9
S11E18
The Gates Excitation
2018-01-01
Bill Gates visits Penny's work, and the gang schemes to meet him. Hilarity ensues.
User ratings: 721
Average rating: 7.2
S11E19
The Tenant Disassociation
2018-04-05
Leonard runs against Sheldon to be president of the tenants association; Wolowitz and Koothrappali find a drone in the backyard.
User ratings: 693
Average rating: 7.3
S11E20
The Reclusive Potential
2018-04-12
Sheldon takes the guys to a cabin in the middle of nowhere to meet a reclusive scientist; Penny and Bernadette improvise Amy's bachelorette party.
User ratings: 672
Average rating: 7.1
S11E21
The Comet Polarization
2018-04-19
Sheldon's comic book store experience changes when writer Neil Gaiman puts Stuart's store on the map; friendships are threatened when Koothrappali takes credit for Penny's astronomical discovery.
User ratings: 647
Average rating: 7.5
S11E22
The Monetary Insufficiency
2018-04-26
Sheldon goes to Vegas to win money for science. Also, Penny and Bernadette take Amy wedding dress shopping, but her terrible choice entangles them in a web of lies.
User ratings: 620
Average rating: 7.3
S11E23
The Sibling Realignment
2018-05-03
Sheldon and Leonard make a road trip to wrangle a reluctant wedding guest.
User ratings: 671
Average rating: 7.8
S11E24
The Bow Tie Asymmetry
2018-05-10
When Amy's parents and Sheldon's family arrive, everybody is focused to make sure all wedding arrangements go according to plan - everyone except the bride and groom.
User ratings: 1,321
Average rating: 9.1
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Two and a Half MenUser ratings: 217,521
Average rating: 7.1
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