Grey's Anatomy: Season 4, Episode 6

4 - 6: Kung Fu Fighting

The Chief organizes a gentleman's evening, leaving Derek and Sloan dumbfounded, and curious to determine what it really is. Doctor Hahn's favoritism of Izzie leads a jealous Cristina to confront the Chief about her lack of cardio-related surgeries, whereas Meredith can barely handle it with Lexie anymore.