Series 3 Episode 13

Leonard and Sheldon's flat is burgled. Determined to outwit any thieves, the gang work on creating a state-of-the-art security system to protect the apartment. Can they deter the burglars?

The Electric Can Opener Fluctuation: Sheldon heads to Texas after learning that his friends meddled with his expedition data

First shown: Thu 17 Dec 2009 | 21 mins

Series 3 Episode 1

The Jiminy Conjecture: Leonard and Penny feel awkward around each other after their romantic liaison

First shown: Thu 24 Dec 2009 | 21 mins

Series 3 Episode 2

The Gothowitz Deviation: Sheldon tries to modify Penny's behaviour using chocolate

First shown: Thu 31 Dec 2009 | 20 mins

Series 3 Episode 3

The Pirate Solution: Raj reluctantly accepts a job offer from Sheldon so that he won't be sent back to India

First shown: Thu 7 Jan 2010 | 20 mins

Series 3 Episode 4

The Creepy Candy Coating Corollary: Sheldon enters a competition that pits him against his nemesis, Wil Wheaton from Star Trek

First shown: Thu 14 Jan 2010 | 20 mins

Series 3 Episode 5

The Cornhusker Vortex: Sheldon teaches Leonard about football so that he can fit in with Penny's friends

First shown: Thu 21 Jan 2010 | 19 mins

Series 3 Episode 6

The Guitarist Amplification: Sheldon is upset when Leonard and Penny argue about Penny's male friend staying over

First shown: Thu 21 Jan 2010 | 19 mins

Series 3 Episode 7

The Adhesive Duck Deficiency: Sheldon has to come to Penny's rescue after she dislocates her shoulder in the shower

First shown: Thu 28 Jan 2010 | 20 mins

Series 3 Episode 8

The Vengeance Formulation: Howard is scared about committing to Bernadette, so he avoids her

First shown: Thu 4 Feb 2010 | 18 mins

Series 3 Episode 9

The Gorilla Experiment: Howard and Penny are jealous when Bernadette is fascinated with Leonard's physics project

First shown: Thu 11 Feb 2010 | 20 mins

Series 3 Episode 10

The Maternal Congruence: Leonard's hurt when his mum arrives unannounced and then learns Sheldon knew of the visit

First shown: Thu 18 Feb 2010 | 19 mins

Series 3 Episode 11

The Psychic Vortex: A rift forms between Leonard and Penny when he ridicules her belief in psychics

First shown: Thu 13 May 2010 | 19 mins

Series 3 Episode 12

The Bozeman Reaction: The gang work on creating a state-of-the-art security system after the flat is burgled

First shown: Thu 20 May 2010 | 20 mins

Series 3 Episode 13

The Einstein Approximation: Sheldon gets a job at the Cheesecake Factory to kick-start his creativity

First shown: Thu 27 May 2010 | 18 mins

Series 3 Episode 14

The Large Hadron Collision: Sheldon's jealous when Leonard asks Penny to visit the Large Hadron Collider with him

First shown: Thu 3 Jun 2010 | 20 mins

Series 3 Episode 15

The Excelsior Acquisition: Sheldon misses a chance to meet Stan Lee when he's summoned to court for a driving offence

First shown: Thu 10 Jun 2010 | 20 mins

Series 3 Episode 16

The Precious Fragmentation: The gang squabble over a ring that they believe was used in The Lord of the Rings movies

First shown: Thu 17 Jun 2010 | 20 mins

Series 3 Episode 17

The Pants Alternative: Sheldon earns an award but is scared of making a speech at the ceremony to receive it

First shown: Thu 24 Jun 2010 | 21 mins

Series 3 Episode 18

The Wheaton Recurrence: Leonard tells Penny that he loves her but doesn't get the response he hoped for

First shown: Thu 1 Jul 2010 | 20 mins

Series 3 Episode 19

The Spaghetti Catalyst: Sheldon tries to hide his friendship with Penny from Leonard

First shown: Thu 8 Jul 2010 | 19 mins

Series 3 Episode 20

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