Video ClipsSee all »
Watch See all »
Dick Van Dyke plays a beloved, old-school MD who mentors J.D. in a delicate surgical procedure; D.L. Hughley portrays Turk's gregarious older brother. Jordan: Christa Miller Lawrence. Troy: Joe Rose. Dr. Gerson: Julie Hudson.
The residency directorship appeals to Cox, but Kelso's a hurdle; tensions surface between Elliot and Sean, who learns of her fling with J.D.; a surgical procedure partners Carla with Turk, who's not anxious to work side by side with his fiancee.