Where to stream The Big Bang Theory

Season 4

The Big Bang Theory

Comedy
Romance
TV-PG
8.2 / 10

Season released 23rd Sep, 2010.

Where to Watch

Apple TV

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Free

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Season 4 Episodes

S04 Episode 1

The Robotic Manipulation

Penny tags along on Sheldon's first-ever date with a woman he's been texting for months. Meanwhile, Wolowitz finds a new use for a robotic arm.

21 mins · Thu, 23 Sep 2010

S04 Episode 2

The Cruciferous Vegetable Amplification

Sheldon realises he won't live long enough to download his consciousness into a robot body, so he attempts to extend his life span. Meanwhile, the gang bump into Apple co-founder Steve Wozniak at The Cheesecake Factory.

20 mins · Thu, 30 Sep 2010

S04 Episode 3

The Zazzy Substitution

The guys are concerned when Sheldon searches for an alternative to human companionship, after he and Amy break up. Can they help restore his faith in people?

21 mins · Thu, 7 Oct 2010

S04 Episode 4

The Hot Troll Deviation

An embarrassing secret of Wolowitz's comes to light as he tries to win back his ex-girlfriend, Bernadette. Meanwhile, Sheldon and Raj have a small war at work.

19 mins · Thu, 14 Oct 2010

S04 Episode 5

The Desperation Emanation

Leonard realises that he's the only one of the gang without a girlfriend, while Sheldon wants to get rid of his when she hatches a plan for him to meet her mother.

20 mins · Thu, 21 Oct 2010

S04 Episode 6

The Irish Pub Formulation

Leonard attempts to keep his secret affair with Raj's sister Priya from all of his friends. Sheldon begins to develop an overly elaborate, complicated and convoluted cover story for him.

21 mins · Thu, 28 Oct 2010

S04 Episode 7

The Apology Insufficiency

Leonard believes his problem with women stems from a lack of confidence and vows to be more self-assured around attractive women. Meanwhile, Wolowitz has a call from the FBI.

21 mins · Thu, 4 Nov 2010

S04 Episode 8

The 21-Second Excitation

The gang are excited about a new screening of Indiana Jones and Raiders of the Lost Ark, because there are 21 seconds of additional footage being seen for the first time, and camp out to get tickets for the film.

19 mins · Thu, 11 Nov 2010

S04 Episode 9

The Boyfriend Complexity

When Penny's dad comes to visit, Leonard discovers that she told her parents they were back together because they always had a soft spot for him.

21 mins · Thu, 18 Nov 2010

S04 Episode 10

The Alien Parasite Hypothesis

Amy finds she has sexual feelings for Penny's ex-boyfriend Zack, while Koothrappali and Wolowitz try to prove who would be the better superhero.

20 mins · Thu, 9 Dec 2010

S04 Episode 11

The Justice League Recombination

The guys slowly warm to Penny's new boyfriend Zack, and find a way to bond with him when they enter a fancy dress contest.

20 mins · Thu, 16 Dec 2010

S04 Episode 12

The Bus Pants Utilization

Leonard's idea for a smartphone application derails his friendship with Sheldon as they fight for control of the project.

21 mins · Thu, 6 Jan 2011

S04 Episode 13

The Love Car Displacement

Tensions run high when Bernadette runs into her hulk of an ex-boyfriend at a science conference. Threatened by Bernadette's ex-boyfriend, Wolowitz has an argument with Bernadette and causes chaos.

21 mins · Thu, 20 Jan 2011

S04 Episode 14

The Thespian Catalyst

Sheldon agrees to take part in a short lecture series at the university, but worries that the students don't seem to like him. On Amy's advice, he asks Penny to give him acting lessons so that he can engage with his audience better.

21 mins · Thu, 3 Feb 2011

S04 Episode 15

The Benefactor Factor

A wealthy benefactor at the university makes Leonard consider how far he's willing to go in the name of science.

20 mins · Thu, 10 Feb 2011

S04 Episode 16

The Cohabitation Formulation

Wolowitz is torn between taking things to the next level with Bernadette and pleasing his mother. Meanwhile, Leonard rekindles his relationship with Raj's sister, Priya.

20 mins · Thu, 17 Feb 2011

S04 Episode 17

The Toast Derivation

Sheldon gets a new group of friends when the gang start hanging out at Raj's more often, and he realises that it's actually Leonard who is the centre of their social group and not him.

21 mins · Thu, 24 Feb 2011

S04 Episode 18

The Prestidigitation Approximation

Leonard must choose between new girlfriend Priya and his friendship with Penny, and Howard drives Sheldon crazy with a magic trick.

21 mins · Thu, 10 Mar 2011

S04 Episode 19

The Zarnecki Incursion

Sheldon is totally distraught after someone has hacked into his 'World of Warcraft' account. Howard, Leonard and Raj try to help him find the culprit.

21 mins · Thu, 31 Mar 2011

S04 Episode 20

The Herb Garden Germination

Sheldon and Amy experiment on their friends by spreading gossip, while Howard takes a big step in his relationship with Bernadette.

21 mins · Thu, 7 Apr 2011

S04 Episode 21

The Agreement Dissection

Priya uses her legal nous to dissect the roommate agreement and put Sheldon in his place. Meanwhile, the girls take Sheldon dancing.

20 mins · Thu, 28 Apr 2011

S04 Episode 22

The Wildebeest Implementation

Raj attempts to cure his anxiety about talking to women, while Penny uses Bernadette to spy on Leonard and his girlfriend.

21 mins · Thu, 5 May 2011

S04 Episode 23

The Engagement Reaction

Howard finally tells him mum that he's engaged to Bernadette. Unfortunately, the news lands his mum in hospital.

19 mins · Thu, 12 May 2011

S04 Episode 24

The Roommate Transmogrification

Bernadette receives her PhD and the gang begin to tease Wolowitz for being the only one among them who isn't a doctor. Meanwhile, Koothrappali becomes Sheldon's new flatmate after hearing Leonard and Priya engaging in a Star Trek bedroom fantasy.

21 mins · Thu, 19 May 2011

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