VIDEO: Sneak Peek - Tonight's Episode of CBS's THE BIG BANG THEORY

On tonight's episode of CBS's THE BIG BANG THEORY titled 'The Itchy Brain Simulation,' Leonard tries to keep Sheldon from overreacting when a past mistake comes to light, but Sheldon punishes Leonard by making him walk a mile in his shoes. Meanwhile, Penny confronts Raj's ex-girlfriend, Lucy.

The episode airs tonight, Thursday, Nov. 14 (8:00 – 8:31 PM, ET/PT) on the CBS Television Network. Get a sneak peek below!

Leonard and Sheldon are brilliant physicists – geniuses in the laboratory, but socially challenged everywhere else. Enter beautiful, street-smart neighbor, Penny, who aims to teach them a thing or two about life. Despite their on-again, off-again relationship in the past, Leonard believes he's found true love with Penny. 
 

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