J.D. and Turk go to a medical convention in Phoenix, Arizona, where they run into J.D.'s ex-girlfriend Dr. Kim Briggs, who has a surprise for J.D. Meanwhile at Sacred Heart, the janitor pretends to be the chief of medicine and Dr. Cox starts to put doubts about the wedding into Elliot's mind.
Elenco: Donald Faison , John C. McGinley , Ken Jenkins , Zach Braff , Sarah Chalke , Neil Flynn , Robert Maschio , Sam Lloyd , Christa Miller , Travis Schuldt , Johnny Kastl , Kerry Bishé , Eliza Coupe , Dave Franco , Michael Mosley , Robert Maschio , Sam Lloyd , Travis Schuldt .