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The Big Bang Theory synopsis

Arch-nerds Leonard and Sheldon may know more than their fair share about subatomic particles, but when it comes to people in general, and women in particular, they're absolutely clueless...

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The Beta Test Initiation

Leonard and Penny decide to put their relationship through a 'beta test', allowing them to report the problems they have with each other as 'bugs'.

Channel 4 11.40am Sat 30 Aug