Rank Title Airs On
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S8:E5 The Focus Attenuation

The Big Bang Theory
3.00/ 5 from 1 users

The girls head to Las Vegas, while the guys try to invent something cool, but only come up with new ways to procrastinate.

NA
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S8:E20 The Fortification Implementation

The Big Bang Theory
3.00/ 5 from 1 users

Howard meets the half-brother he never knew he had. Penny is invited to appear on Wil Wheaton's podcast.

NA
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S2:E13 The Friendship Algorithm

The Big Bang Theory
3.00/ 5 from 1 users

Sheldon triesto make friends with Kripke in the hope that it will get him access to a coveted computer at the university.

NA
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S5:E15 The Friendship Contraction

The Big Bang Theory
4.00/ 5 from 1 users

Leonard signs out of his roommate agreement, reducing himself and Sheldon to mere acquaintances, while Howard tries to think of ...read more 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. show less

NA
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S7:E17 The Friendship Turbulence

The Big Bang Theory
3.00/ 5 from 1 users

After arguing with Sheldon, Howard tries to make amends by taking him to NASA headquarters in Houston. Penny has second thoughts ...read more 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. show less

NA
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S1:E3 The Fuzzy Boots Corollary

The Big Bang Theory
3.00/ 5 from 1 users

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.

NA
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S11:E18 The Gates Excitation

The Big Bang Theory
0/ 5 from 0 users

Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company. Also, ...read more Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company. Also, Leonard, Koothrappali and Wolowitz do everything in their power to meet him, while Sheldon thinks he is the victim of an April Fools prank show less

NA
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S10:E9 The Geology Elevation

The Big Bang Theory
0/ 5 from 0 users

Sheldon can't contain his jealousy when Bert from the Geology Department wins the MacArthur Genius Grant. A toy Howard finds ...read more 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. show less

NA
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S11:E7 The Geology Methodology

The Big Bang Theory
0/ 5 from 0 users

Bert asks Sheldon to collaborate on a project with him, Sheldon becomes dubious others finding out because he thinks geology is ...read more 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. show less

NA
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S5:E7 The Good Guy Fluctuation

The Big Bang Theory
4.00/ 5 from 1 users

Sheldon tries to get into the spirit of Halloween by trying to scare the guys after they prank him. Leonard seeks Penny's ...read more 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. show less

NA
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S7:E23 The Gorilla Dissolution

The Big Bang Theory
4.00/ 5 from 1 users

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. ...read more 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. show less

NA
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S3:E10 The Gorilla Experiment

The Big Bang Theory
4.00/ 5 from 1 users

Sheldon attempts to help Penny understand physics to impress Leonard, while Howard becomes jealous when Bernadette takes an ...read more Sheldon attempts to help Penny understand physics to impress Leonard, while Howard becomes jealous when Bernadette takes an interest in Leonard's research. show less

NA
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S3:E3 The Gothowitz Deviation

The Big Bang Theory
2.00/ 5 from 1 users

Sheldon attempts to covertly alter Penny's habits, while Howard and Raj try their luck meeting women at a Goth-style club.

NA
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S8:E22 The Graduation Transmission

The Big Bang Theory
3.00/ 5 from 1 users

Howard questions his engineering abilities when he and Sheldon can't get a toy drone to fly. A cancelled flight nearly ...read more 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. show less

NA
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S12:E7 The Grant Allocation Derivation

The Big Bang Theory
0/ 5 from 0 users

Leonard is caught between a rock and a hard place when he's responsible for distributing extra grant money. Also, Bernadette ...read more Leonard is caught between a rock and a hard place when he's responsible for distributing extra grant money. Also, Bernadette turns the backyard playhouse into a hideaway from her husband and kids. show less

NA
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S1:E8 The Grasshopper Experiment

The Big Bang Theory
3.00/ 5 from 1 users

When Raj's parents set him up on a blind date, he finds he can talk to women with the aid of alcohol.

NA
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S2:E4 The Griffin Equivalency

The Big Bang Theory
4.00/ 5 from 1 users

The guys struggle to cope with Raj's arrogance after he is featured in a People magazine article.

NA
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S3:E7 The Guitarist Amplification

The Big Bang Theory
3.00/ 5 from 1 users

Sheldon is caught in the middle when Leonard and Penny argue about Penny's friend staying at her apartment.

NA
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S10:E23 The Gyroscopic Collapse

The Big Bang Theory
0/ 5 from 0 users

After celebrating the completion of the top-secret Air Force project, Leonard, Sheldon and Wolowitz get an unwelcome surprise; ...read more 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. show less

NA
BigBangTheoryS6

S6:E7 The Habitation Configuration

The Big Bang Theory
3.00/ 5 from 1 users

Howard makes a decision whether or not to move out of his mother's house, while Sheldon is caught in the middle of an ...read more 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. show less

NA
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S1:E5 The Hamburger Postulate

The Big Bang Theory
4.00/ 5 from 1 users

Leslie seduces Leonard, but afterwards tells him that she is only interested in a one-night stand.

NA
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S5:E21 The Hawking Excitation

The Big Bang Theory
4.00/ 5 from 1 users

Sheldon uses any and all means to meet his hero, Dr. Stephen Hawking.

NA
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S9:E6 The Helium Insufficiency

The Big Bang Theory
4.00/ 5 from 1 users

Leonard and Sheldon go to great lengths to secure the helium they need during a nation-wide shortage. Meanwhile, the rest of the ...read more 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. show less

NA
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S4:E20 The Herb Garden Germination

The Big Bang Theory
4.00/ 5 from 1 users

Sheldon and Amy secretly experiment on the gang by spreading rumors when they hear that Bernadette is thinking about breaking up ...read more Sheldon and Amy secretly experiment on the gang by spreading rumors when they hear that Bernadette is thinking about breaking up with Howard. show less

NA
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S7:E12 The Hesitation Ramification

The Big Bang Theory
4.00/ 5 from 1 users

After Leonard tries to help Penny following a failed role on a TV show, she makes an important decision. Meanwhile, Raj and ...read more 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. show less

NA
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S6:E3 The Higgs Boson Observation

The Big Bang Theory
4.00/ 5 from 1 users

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, ...read more 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. show less

NA
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S7:E1 The Hofstadter Insufficiency

The Big Bang Theory
3.00/ 5 from 1 users

Sheldon and Penny bond over missing Leonard. Howard tries to help Raj get over his breakup with Lucy. Amy and Bernadette take a ...read more 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. show less

NA
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S2:E20 The Hofstadter Isotope

The Big Bang Theory
4.00/ 5 from 1 users

Leonard is so upset when a friend from the comic book store begins dating Penny that he convinces Howard and Raj to take him to ...read more Leonard is so upset when a friend 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. show less

NA
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S10:E12 The Holiday Summation

The Big Bang Theory
0/ 5 from 0 users

After spending the holidays apart, the gang gets together to hear about Sheldon's and Amy's trip to his mother's, ...read more 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. show less

NA
BigBangTheoryS6

S6:E5 The Holographic Excitation

The Big Bang Theory
4.00/ 5 from 1 users

While Raj plans Stuart's Halloween party at the comic book store, Howard annoys the rest of the gang by constantly talking ...read more 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. show less

NA
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S8:E4 The Hook-up Reverberation

The Big Bang Theory
3.00/ 5 from 1 users

Raj's honesty about his past comes back to haunt him after Emily takes a dislike to Penny. Meanwhile, the guys consider ...read more 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. show less

NA
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S4:E4 The Hot Troll Deviation

The Big Bang Theory
3.00/ 5 from 1 users

Howard tries to get Penny's help in winning back Bernadette, but first has to confess the embarrassing reason why they broke ...read more 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. show less

NA
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S10:E5 The Hot Tub Contamination

The Big Bang Theory
0/ 5 from 0 users

Sheldon and Amy go through a period of adjustment with their new living arrangement. Howard and Bernadette are forced to ...read more 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. show less

NA
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S12:E6 The Imitation Perturbation

The Big Bang Theory
0/ 5 from 0 users

When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party. Also, ...read more When Wolowitz dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny's Halloween party. Also, Leonard is shocked that Penny doesn't remember their first kiss. show less

NA
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S7:E19 The Indecision Amalgamation

The Big Bang Theory
3.00/ 5 from 1 users

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 ...read more 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. show less

NA
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S5:E2 The Infestation Hypothesis

The Big Bang Theory
4.00/ 5 from 1 users

Amy gets inadvertently caught in the middle of a fight between Sheldon and Penny over a chair. Leonard tries to add some spice ...read more 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. show less

NA
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S12:E19 The Inspiration Deprivation

The Big Bang Theory
0/ 5 from 0 users

The concept of what it would mean for women everywhere if Amy were to win a Nobel Prize causes Amy to have a meltdown. Also, ...read more The concept of what it would mean for women everywhere if Amy were to win a Nobel Prize causes Amy to have a meltdown. Also, Koothrappali and Wolowitz try to relive the good old days after Wolowitz buys a scooter that looks like the one he had years ago. show less

NA
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S8:E16 The Intimacy Acceleration

The Big Bang Theory
3.00/ 5 from 1 users

Sheldon and Penny agree to participate in an unusual experiment. Leonard, Amy, Raj and Emily spend the evening trying to escape ...read more 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. show less

NA
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S4:E6 The Irish Pub Formulation

The Big Bang Theory
3.00/ 5 from 1 users

Leonard tries to keep everyone from finding out that he spent the night with Raj's sister, but Sheldon finds out and ...read more 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. show less

NA
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S5:E8 The Isolation Permutation

The Big Bang Theory
2.00/ 5 from 1 users

Amy is hurt when Penny and Bernadette go bridesmaid dress shopping without her, so she turns to a reluctant Sheldon for comfort.

NA
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S7:E8 The Itchy Brain Simulation

The Big Bang Theory
3.00/ 5 from 1 users

Sheldon demands Leonard make up for a mistake from their past. Penny confronts Raj's ex-girlfriend, Lucy.

NA
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S1:E12 The Jerusalem Duality

The Big Bang Theory
3.00/ 5 from 1 users

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 ...read more 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. show less

NA
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S3:E2 The Jiminy Conjecture

The Big Bang Theory
4.00/ 5 from 1 users

Leonard and Penny's first night together goes awkwardly. Sheldon and Howard wager on the species of a cricket.

NA
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S8:E2 The Junior Professor Solution

The Big Bang Theory
4.00/ 5 from 1 users

Sheldon is forced to teach a class as a Junior Professor. Meanwhile, Amy plays both sides when tension arises between Penny and ...read more Sheldon is forced to teach a class as a Junior Professor. Meanwhile, Amy plays both sides when tension arises between Penny and Bernadette. show less

NA
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S4:E11 The Justice League Recombination

The Big Bang Theory
5.00/ 5 from 1 users

The guys enter a costume contest as members of the Justice League and convince Penny and Zack to join them.

NA
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S2:E12 The Killer Robot Instability

The Big Bang Theory
4.00/ 5 from 1 users

Howard becomes depressed after Penny makes a cruel statement about his love life, while the rest of the guys prepare for a ...read more 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. show less

NA
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S3:E15 The Large Hadron Collision

The Big Bang Theory
4.00/ 5 from 1 users

When Leonard is offered a trip to Switzerland on Valentine's Day to visit the CERN laboratory, Sheldon uses any and all ...read more 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. show less

NA
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S5:E23 The Launch Acceleration

The Big Bang Theory
3.00/ 5 from 1 users

NASA cancel, and later reinstate Howard's mission into space, coinciding with his wedding. Leonard inadvertently jeopardizes ...read more NASA cancel, and later reinstate Howard's mission into space, coinciding with his wedding. Leonard inadvertently jeopardizes his relationship with Penny. show less

NA
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S12:E18 The Laureate Accumulation

The Big Bang Theory
0/ 5 from 0 users

When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip ...read more When competitors Pemberton and Campbell charm America on a publicity tour, Sheldon and Amy try to bring Nobel laureates Kip Thorne, George Smoot and Frances Arnold to their side. Also, Halley's fear of the dark leads to opportunity and conflict for Howard, Bernadette and Stuart. show less

NA
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S8:E18 The Leftover Thermalization

The Big Bang Theory
4.00/ 5 from 1 users

Tension arises when a magazine fails to mention Leonard in an article about the paper he co-wrote with Sheldon, and a blackout ...read more 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. show less

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