The Cohabitation Formulation
Run Time: 22 mins
Air Date: Thu, 17 Feb 2011
Average Rating: ⭐ 7.3 (39 votes)
CBSSeason 4 - Episode 16
Average Rating: ⭐ 7.3 (39)
As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.