(1976) Murder by Death

as Milo Perrier

(1979) Scavenger Hunt

as Henri

(1963) The Power and the Glory

as Soldier (uncredited)

(1984) The Muppets Take Manhattan

as Mr. Skeffington

(1987) Hunk

as Dr. D

(1980) Wholly Moses

as Hyssop

(1981) Only When I Laugh

as Jimmy

(1978) Bye Bye Monkey

as Andreas Flaxman

(1978) The Cheap Detective

as Marcel

(1969) The Littlest Angel

as Father

(1971) A New Leaf

as Uncle Harry

(1972) Man of La Mancha

as Sancho Panza / Cervantes' Manservant

(1970) The Strawberry Statement

as Grocer

(1980) The Diary of Anne Frank

as Hermann van Daan

(1982) Lily for President?

as Arthur

(1970) Tell Me That You Love Me, Junie Moon

as Mario

(1969) Generation

as Mr. Blatto

(1975) The Wild Party

as Jolly Grimm

(1971) Such Good Friends

as Timmy

(1988) The Chair

as Dr. Harold Woodhouse Langer

(1972) The Trouble With People

as Husband (Story 1)

(1983) Alice in Wonderland

as King of Hearts

(1987) The Stepford Children

as Mr. Jamison

(1986) There Must Be a Pony

as Mervin Trellis

(1989) That's Adequate

as Max Roebling

(1982) The Curious Case Of Santa Claus

as Santa Claus

(1964) Ensign Pulver

as Skouras

(1977) Charleston

as Joe Lo Monaco

(1970) End of the Road

as School Man

(1980) From Raquel with Love

as Stanley

(1966) On The Flip Side

as Mr Zuckerman

(1982) Debby Boone... One Step Closer

as Self

(1982) Night of 100 Stars

as Self

(1976) The Blue Bird

as Tylo the dog

(1982) St. Elsewhere

as ---

(1984) Who's the Boss?

as ---

(1979) Trapper John, M.D.

as ---

(1977) The Love Boat

as Marion Atkins

(1985) The Twilight Zone

as ---

(1985) The Ray Bradbury Theater

as John Raleigh Braling

(1976) The Muppet Show

as Self - Special Guest

(1951) Hallmark Hall of Fame

as ---

(1967) Rowan & Martin's Laugh-In

as Self

(1982) Matt Houston

as ---

(1963) The Patty Duke Show

as ---

(1984) Brothers

as Mel Roth

(1970) The Flip Wilson Show

as Self

(1966) ABC Stage 67

as Mr. Zuckerman

(1979) Sweepstakes

as ---

(1973) Calucci's Department

as ---

(1976) The Dumplings

as Joe Dumpling

(1978) The Eddie Capra Mysteries

as ---

(1961) The Mike Douglas Show

as Self

(1962) The Tonight Show Starring Johnny Carson

as Self

(1983) Reading Rainbow

as Himself - Narrator (voice)

(1979) The French Atlantic Affair

as Georges Sauvinage

(1961) The Mike Douglas Show

as Self - Co-Host

(1967) The Carol Burnett Show

as Self - Guest / Various Characters

(1971) Great Performances

as King of Hearts

(1984) Murder, She Wrote

as Horatio Baldwin