An obsessive-compulsive surgeon (Michael J. Fox) manages to turn his disorder into a distinct advantage.
J.D. decides to end his relationship with Danni (Tara Reid) because things are moving too fast; Dr. Cox's newfound sensitivity interferes with his ability to inspire fear.
When a simple procedure goes awry, Elliot seeks advice from Dr. Kevin Casey (Michael J. Fox); Turk asks JD to be his best man at the wedding.