Addison (Kate Walsh) is not happy when Sloan (Eric Dane) joins the staff, and in consequence suffers a severe attack of self-doubt just when her patient, a pregnant woman (Tina Holmes), needs her most. Cristina (Sandra Oh) wants Burke (Isaiah Washington) to continue his rehab, but he is anxious to prove that he's a capable a surgeon as ever, hand tremors or no hand tremors. Still unsettled in matters of the heart, Meredith (Ellen Pompeo) is ill-prepared for a medical emergency. And Izzie (Katherine Heigl) receives an astonishing "reward" from the father (Fred Ward) of the late Denny Duquette. Weaving through all this intrigue is the story of ailing car salesman Shawn Sullivan (Alan Blumenfield). ~ Hal Erickson, Rovi