Charles Grodin

as Arthur

as Dick D'Angelo

as Leslie Breitbart

as Jerry

as Bob Kowalski

as Mr. Parker (The Old Man)

as Martin Daniels

as George Newton

as Harrison Winslow

as Commandeered Car Driver

as Murray Blum

as George Newton

as Spencer Barnes

as Quentin Fitzwaller

as Jonathan Mardukas aka “The Duke”

as Mr. Glerman

as George Matlin

as Jim Harrison

as George Lollar

as Herb Derman

as Buddy

as Warren

as Nicky Holiday

as Vance Kramer

as Ira Parks

as Homer

as Jake

as Warren Yeager

as Tony Abbott

as Arnie Doud, Harge Gang

as Fred S. Wilson

as Howard R. Chesser

as Lenny Cantrow

as Drummer Boy (uncredited)