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Playback is currently unavailable for S9 E1 · The Matrimonial Momentum. Episode details remain available below.

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The Big Bang Theory

7.9/10 12,967 votes
Comedy

Physicists Leonard and Sheldon find their nerd-centric social circle with pals Howard and Raj expanding when aspiring actress Penny moves in next door.

Created by:
Chuck Lorre, Bill Prady
Cast:
Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg
Language:
English
Country:
United States of America
Network:
CBS

Episode guide

Seasons

13 available

Season 9

Episodes

Episode 1 selected
Still from The Matrimonial Momentum E01

Episode 1

★ 7.3

The Matrimonial Momentum

2015-09-21 · 19m

After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship.

Current episode
Still from The Separation Oscillation E02

Episode 2

★ 7.3

The Separation Oscillation

2015-09-28 · 19m

Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny's mind at ease. Also, Sheldon films a special episode of "Fun with Flags" after his breakup with Amy, and Bernadette feels guilty about withholding a secret from Penny.

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Still from The Bachelor Party Corrosion E03

Episode 3

★ 7.5

The Bachelor Party Corrosion

2015-10-05 · 19m

The guys' science skills are put to the test when they get a flat tire during Leonard's bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard.

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Still from The 2003 Approximation E04

Episode 4

★ 7.5

The 2003 Approximation

2015-10-12 · 19m

Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny. Also, Howard and Raj form a band to play at the Comic Book Store.

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Still from The Perspiration Implementation E05

Episode 5

★ 7.1

The Perspiration Implementation

2015-10-19 · 19m

The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy. Also, when Stuart struggles to get female customers at the Comic Book Store, Penny, Amy and Bernadette come by to help him out.

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Still from The Helium Insufficiency E06

Episode 6

★ 7.1

The Helium Insufficiency

2015-10-26 · 19m

In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man.

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Still from The Spock Resonance E07

Episode 7

★ 7.7

The Spock Resonance

2015-11-05 · 19m

Wil Wheaton interviews Sheldon for a Star Trek documentary where he reveals the ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the topic of starting a family together with Howard is brought up.

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Still from The Mystery Date Observation E08

Episode 8

★ 7.5

The Mystery Date Observation

2015-11-12 · 18m

Sheldon, Wolowitz and Koothrappali post an online advertisement to find Sheldon a new girlfriend. Also, when Amy is coy with details about a guy she is dating, Penny and Bernadette decide to spy on her.

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Still from The Platonic Permutation E09

Episode 9

★ 7.5

The Platonic Permutation

2015-11-19 · 21m

Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought.

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Still from The Earworm Reverberation E10

Episode 10

★ 7.9

The Earworm Reverberation

2015-12-10 · 21m

Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, "Footprints on the Moon".

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Still from The Opening Night Excitation E11

Episode 11

★ 8.3

The Opening Night Excitation

2015-12-17 · 21m

After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket.

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Still from The Sales Call Sublimation E12

Episode 12

★ 7.3

The Sales Call Sublimation

2016-01-07 · 18m

Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery, and Wolowitz and Bernadette can't believe what they are feeling after Stuart moves out.

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Still from The Empathy Optimization E13

Episode 13

★ 7.3

The Empathy Optimization

2016-01-14 · 19m

After having to deal with a sick Sheldon, Leonard, Penny and the gang try to treat themselves to a Sheldon-free weekend.

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Still from The Meemaw Materialization E14

Episode 14

★ 7.3

The Meemaw Materialization

2016-02-04 · 19m

Meemaw meets Amy, but it isn't all roses. Meemaw seems to have an axe to grind with her. Sheldon comes to Amy's defense, but not before Meemaw lets a little secret of his slip.

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Still from The Valentino Submergence E15

Episode 15

★ 7.3

The Valentino Submergence

2016-02-11 · 20m

Sheldon and Amy host a live 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 the cute girl he met at the Comic Bookstore.

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Still from The Positive Negative Reaction E16

Episode 16

★ 7.4

The Positive Negative Reaction

2016-02-18 · 19m

When the gang finds out about Bernadette’s pregnancy, they celebrate by singing karaoke. Also, Bernadette is concerned when Wolowitz freaks out over her pregnancy announcement, and Wolowitz is convinced he must make more money to provide for the baby.

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Still from The Celebration Experimentation E17

Episode 17

★ 7.1

The Celebration Experimentation

2016-02-25 · 19m

After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.

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Still from The Application Deterioration E18

Episode 18

★ 7.3

The Application Deterioration

2016-03-10 · 18m

Leonard, Sheldon, and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup.

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Still from The Solder Excursion Diversion E19

Episode 19

★ 7.3

The Solder Excursion Diversion

2016-03-31 · 21m

Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Also, Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie.

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Still from The Big Bear Precipitation E20

Episode 20

★ 7.3

The Big Bear Precipitation

2016-04-07 · 19m

Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line.

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Still from The Viewing Party Combustion E21

Episode 21

★ 7.0

The Viewing Party Combustion

2016-04-21 · 18m

Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.

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Still from The Fermentation Bifurcation E22

Episode 22

★ 7.2

The Fermentation Bifurcation

2016-04-28 · 20m

The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack. Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group, and things don’t go as planned when Koothrappali introduces his new girlfriend, Claire.

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Still from The Line Substitution Solution E23

Episode 23

★ 7.1

The Line Substitution Solution

2016-05-05 · 18m

Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly, comes to town and Penny struggles to make a connection with her.

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Still from The Convergence Convergence E24

Episode 24

★ 7.5

The Convergence Convergence

2016-05-12 · 20m

Chaos ensues when Leonard’s recently divorced parents, Alfred and Beverly, and Sheldon’s devoutly religious mother, Mary, come to town. Also, Wolowitz and Koothrappali think the government is out to get them when they are contacted about their guidance system.

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Cast

Johnny Galecki

Johnny Galecki

Leonard Hofstadter

Jim Parsons

Jim Parsons

Sheldon Cooper

Kaley Cuoco

Kaley Cuoco

Penny

Simon Helberg

Simon Helberg

Howard Wolowitz

Kunal Nayyar

Kunal Nayyar

Rajesh Koothrappali

Melissa Rauch

Melissa Rauch

Bernadette Rostenkowski

Mayim Bialik

Mayim Bialik

Amy Farrah Fowler

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