Episode Titles: Bad
You are viewing a list of 1 The Big Bang Theory episode featuring "Bad" in their title.
Season 2, Episode 1 - The Bad Fish Paradigm
Aired September 22, 2008
When her first date with Leonard doesn't go to plan, Penny finds an unwilling confidant in Sheldon. Sheldon can not handle the stress of keeping Penny's secret, so he decides to move out of the apartment.