Grey's Anatomy: Season 3, Episode 6

3 - 6: Let the Angels Commit

Cristina scrubs in on the rare "humpty dumpty" procedure, much to the envy of her fellow doctors, Alex questions his future medical specialty, George and Addison work with a pregnant woman with an unusual dilemma, and Derek receives a surprise visit from his sister. Meredith becomes Izzie's boss and the two treat a patient that may be admitted into psychiatry.