When a rampaging Dr. Cox (John C. McGinley) suddenly shows up at his door in a strange funk, J.D. (Zach Braff) sees a possibility of a breakthrough in their relationship -- until he learns that Cox loses control in almost an annual rite. Meanwhile, Turk (Donald Faison) elects to partner with Elliot (Sarah Chalke) on a research project so that he can maneuver her back with his buddy J.D., and Carla (Judy Reyes) struggles to fulfill a comatose patient's final request -- playing heavy metal music in his room. Ken Jenkins also stars.
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