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

On tonight's episode of the CBS comedy THE BIG BANG THEORY titled 'The 43 Peculiarity,' Howard and Raj try to get to the bottom of why Sheldon disappears every afternoon at 2:45. Meanwhile, Leonard and Penny deal with jealousy in their relationship. The episode airs Thursday, Nov. 15 (8:00 – 8:31 PM, ET/PT) on the CBS Television Network. Get a sneak peek below!