"Great Expectations" is the thirteenth episode of the third season of the American television medical drama Grey's Anatomy, and the show's 49th episode overall. It was written by Eric Buchman and directed by Michael Grossman. The episode aired on the American Broadcasting Company (ABC) in the United States on January 25, 2007. In the episode, Dr. Derek Shepherd (Patrick Dempsey), Dr. Preston Burke (Isaiah Washington), Dr. Addison Montgomery (Kate Walsh), and Dr. Mark Sloan (Eric Dane) struggle to be considered for the position of chief of surgery after Dr. Richard Webber (James Pickens Jr.) announces his plans for retirement. Further storylines include Dr. George O'Malley (T.R. Knight) mourning his father, Dr. Miranda Bailey (Chandra Wilson) trying to get financial support for a free clini