This morning they were playing ping-pong in the hospital rec room. Now they're lost in New York and framed for murder. This was never covered in group therapy.

Michael Keaton heads an all-star cast in this irresistible comedy about four mental patients who are seperated from their therapist on the way to a baseball game.

A chronic liar with a violent streak, Billy (Michael Keaton) finds himself on the loose in New York City with his fellow group-therapy patients: Henry (Christopher Lloyd), an insufferable cleanliness freak; Jack (Peter Boyle), a former advertsing executive with a Christ complex; and Albert (Stephen Furst), a near catatonic couch potato. Faced with the task of rescuing their missing doctor from a pair of crooked cops, the group takes to the streets in a series of hilarious misadventures.

It's great to be young and insane!