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(1 ep)

as Mickey

as Dr. Victor Loeb

as Malcolm Maltved

as Judge Womack

as Dr. Plotner

as Arthur Fleeber

as Mr. Elinoff(1 ep)

as Beaks(1 ep)

as Magleby

as Warden Edward Dwyer

as Finance Teacher

as Fairchild

as Mr. Ludlow(1 ep)

as Hoakie (segment "Song of the Younger World")(1 ep)

as Friedrich Hoffman(1 ep)

as Tucker 'Smitty' Brown

as Dr. Zook (voice) (uncredited)

as Butler

as Arbuthnot(3 eps)

as Guido Fantoccini

as Hotel Clerk

as Cosmo

as Billy's Father

as Mark

as Self

as Owner

as Telegraph Man(1 ep)

as Orren Brooks

as Brownlee

as Lester Traube

as Harry Bentley(221 eps)

as Plunkett

as Kauldor(1 ep)

as Dr. Beineke

as Reverend Lindquist

as Hitchhiker

as Shots O'Toole

as Chestnut Man

as Ben Lockston

as Zen Buddhist

as Harry Bentley(1 ep)

as The Mad Painter(1 ep)

as Rutherford Melon

as Wells Fargo Ferguson