The Celebration Experimentation: A double bill about Sheldon's admiration for Batman. The gang invite Adam West (Batman in the 1960s TV series) to Sheldon's birthday party. (S9 Ep17/24) [AD,S]
The Bat Jar Conjecture: A double bill about Sheldon's admiration for Batman. The gang throw Sheldon out of their quiz team, giving him a Batman cookie jar as consolation prize. (S1 Ep13/17) [AD,S]