ER: Humpty Dumpty (1999)

With this episode, recurring character "Dr. Dave" Malucci (Erik Palladino) becomes a regular. Elsewhere, John Cullum returns as Greene's (Anthony Edwards) cantankerous father, who arrives in Chicago from San Diego -- and promptly gets lost. As Kovac (Goran Visnjic) and Weaver (Laura Innes) try to save the life of a rape victim, Corday (Alex Kingston) puts her career on the line as she tends to the rapist. Lucy (Kellie Martin) has reasons to be reluctant to release the leader of a choir that has been injured in a bus accident. Finch (Michael Michele) tests teenager Chad Kottmeier (Emile Hirsch) for possible drug abuse. And before exiting the ER, the benighted Gabe Lawrence (Alan Alda) rises to the challenge of an extremely problematic medical emergency. ~ Hal Erickson, Rovi