While everyone knows you can't fight City Hall, there are those who, for whatever reason, can't resist the challenge. Three slightly disturbed psychiatric patients decide to take on the government. What ensues includes car chases, a ferry boat hijacking, strip-teases and lots of fun!

Gabe Kaplan
as Dibley

Alex Karras
as Swaboda

Robert Klein
as Walter

Susan Clark
as Carol

Alex Rocco
as The Boss

James Cromwell
as Dr. Carson

Paul Stewart
as Dr. Segal

Arthur Rosenberg
as The Mayor

Bobby Ramsen
as New Yorker

John DiSanti
as Knuckles