A gleeful Carter removes Benton's appendix. Doug treats a 17-year-old cystic fibrosis patient who wants to die, but isn't old enough to sign a DNR. Mark juggles dates with three women, including psychiatrist Nina Pomerantz. Jeanie and Greg team up to find the culprit behind a rash of staph infections. Haleh has a tough time filling Carol's shoes. Carter and Doyle have a date at the pistol range.