The Big Bang Theory (2007): The Cohabitation Formulation

The Big Bang Theory (2007)

Details

Season
Season 4
Episode
4x16
Air Date
17 February 2011
Where to watch

Overview

The Big Bang Theory season 4, episode 16 — “The Cohabitation Formulation” (4x16) first aired on 17 February 2011.

As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.