S04E16 The Cohabitation Formulation
The Big Bang Theory

calendar_today 2007. Chuck Lorre. Bill Prady.

stars 8.3 Comedy. Romance.

people Johnny Galecki. Jim Parsons. Kaley Cuoco. Simon Helberg.

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