The Big Bang Theory - Season 4 Recap

Fri, Sep 23, 2011 1:46 PM EDT - 3:23

Here's where season 4 left off - Leonard and Priya are dating, Bernadette and Howard are engaged and in the midst of it all Penny and Raj spend a drunken night together. Oh boy! Find out how it all works out Thursdays at 8/7c only on CBS!