Paul Benedict

as Chief Rodrocks

as Night Shift Guard

as Martin Berg

as Prof. Brainiac

as Milo

as Walter Krasna (uncredited)

as Not Guffman

as Jeremy

as Mickey

as Dr. Victor Loeb

as Malcolm Maltved

as Judge Womack

as Dr. Plotner

as Arthur Fleeber

as Mr. Elinoff

as Beaks

as Magleby

as Warden Edward Dwyer

as Finance Teacher

as Fairchild

as Mr. Ludlow

as Hoakie (segment "Song of the Younger World")

as Friedrich Hoffman

as Tucker 'Smitty' Brown

as Dr. Zook (voice) (uncredited)

as Butler

as Arbuthnot

as Guido Fantoccini

as Hotel Clerk

as Cosmo

as Billy's Father

as Mark

as Self

as Owner

as Telegraph Man

as Orren Brooks

as Brownlee

as Lester Traube

as Harry Bentley

as Plunkett

as Kauldor

as Dr. Beineke

as Reverend Lindquist

as Hitchhiker

as Shots O'Toole

as Chestnut Man

as Ben Lockston

as Zen Buddhist

as Harry Bentley

as The Mad Painter

as Rutherford Melon

as Wells Fargo Ferguson