Series 2 Episode 22

Things begin to look up for Leonard when Penny makes a surprising revelation on her second date with Stuart

The Bad Fish Paradigm: Penny opens up to a reluctant Sheldon after a less-than-stellar first date with Leonard

First shown: Wed 19 Nov 2008 | 21 mins

Series 2 Episode 1

The Codpiece Topology: When he sees Penny out on a date with another guy, Leonard rushes back to Leslie Winkle

First shown: Wed 19 Nov 2008 | 20 mins

Series 2 Episode 2

The Barbarian Sublimation: When Penny becomes addicted to an online game, she persistently pesters Sheldon for advice

First shown: Wed 26 Nov 2008 | 20 mins

Series 2 Episode 3

The Griffin Equivalency: Raj becomes massively arrogant when he's named in People Magazine's '30 to Watch Under 30'

First shown: Wed 26 Nov 2008 | 20 mins

Series 2 Episode 4

The Euclid Alternative: Sheldon's friends stage an intervention to overcome his fear of driving

First shown: Wed 3 Dec 2008 | 19 mins

Series 2 Episode 5

The Cooper-Nowitzki Theorem: Sheldon struggles to cope with a student's unexpected devotion to him

First shown: Wed 3 Dec 2008 | 20 mins

Series 2 Episode 6

The Panty Piñata Polarization: After Sheldon bans Penny from the apartment, she retaliates with a devious plan

First shown: Wed 10 Dec 2008 | 20 mins

Series 2 Episode 7

The Lizard-Spock Expansion: A woman who Howard has a major crush on falls for Leonard

First shown: Wed 10 Dec 2008 | 19 mins

Series 2 Episode 8

The White Asparagus Triangulation: Sheldon is delighted that Leonard finally has a girlfriend matching his high standards

First shown: Wed 17 Dec 2008 | 20 mins

Series 2 Episode 9

The Vartabedian Conundrum: Leonard asks Penny for advice when his relationship with Stephanie takes off too quickly

First shown: Wed 17 Dec 2008 | 20 mins

Series 2 Episode 10

The Bath Item Gift Hypothesis: At Christmas, Sheldon's obsession with gift-giving etiquette torments his friends

First shown: Thu 26 Mar 2009 | 20 mins

Series 2 Episode 11

The Killer Robot Instability: Kripke challenges the boys to a robot duel

First shown: Thu 2 Apr 2009 | 20 mins

Series 2 Episode 12

The Friendship Algorithm: Sheldon develops a scientific procedure for making friends

First shown: Thu 9 Apr 2009 | 21 mins

Series 2 Episode 13

The Financial Permeability: When Sheldon lends Penny some money, it brings her ex-boyfriend Kurt back into her life

First shown: Thu 16 Apr 2009 | 21 mins

Series 2 Episode 14

The Maternal Capacitance: A disastrous visit from Leonard's mother has an unexpected side-effect

First shown: Thu 23 Apr 2009 | 20 mins

Series 2 Episode 15

The Cushion Saturation: Penny accidentally shoots one of Sheldon's cushions during a game of paintball

First shown: Thu 30 Apr 2009 | 20 mins

Series 2 Episode 16

The Terminator Decoupling: The boys discover that beautiful sci-fi actress Summer Glau is on the same train as them

First shown: Thu 7 May 2009 | 20 mins

Series 2 Episode 17

The Work Song Nanocluster: Sheldon gets involved in Penny's home-based business selling hair accessories

First shown: Thu 14 May 2009 | 20 mins

Series 2 Episode 18

The Dead Hooker Juxtaposition: Penny develops a rivalry with an attractive new neighbour

First shown: Thu 21 May 2009 | 20 mins

Series 2 Episode 19

The Hofstadter Isotope: Leonard is devastated when Stuart from the comic book shop chats Penny up

First shown: Thu 28 May 2009 | 19 mins

Series 2 Episode 20

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