Episode Titles: Roommate
You are viewing a list of 1 The Big Bang Theory episode featuring "Roommate" in their title.
Season 4, Episode 24 - The Roommate Transmogrification
Aired May 19, 2011
Bernadette receives her Ph.D., leaving Howard as the only scientist in their group who isn't a doctor. Meanwhile, Raj becomes Sheldon's new roommate after Leonard starts staying with Priya in his apartment and Raj overhears their "Star Trek"-inspired bedroom fantasy.