S4, E2: Just when J.D. (Zach Braff) thinks he's landed the chief resident position, Dr. Molly Clock (guest star Heather Graham) convinces Elliot (Sarah Chalke) that she should apply as well. Carla (Judy Reeves) becomes green with envy as everyone starts listening to Dr. Clock's advice, leaving Carla feeling like she's losing control. Meanwhile, Dr. Cox (John C. McGinley) and Turk (Donald Faison), find great difficulty in the removal of a light bulb from a patient's posterior. Ken Jenkins also stars.