Acting

2017		Waiting for Ishtar as Self
2017		An Imperfect Murder as Arthur

2016

as Dick D'Angelo

2015

as Leslie Breitbart

2014

as Jerry

2013

as Father

2012		Char·ac·ter as Self
2012		Final Cut: Ladies and Gentlemen as (archive footage)

2011

as Self

2007

as Self

2006

as Bob Kowalski

2002

1994		The World of Jim Henson as Nicky Holiday (archive footage)
1994		It Runs in the Family as Mr. Parker (The Old Man)
1994		Sesame Street All-Star 25th Birthday: Stars and Street Forever! as Chaz
1994		Clifford as Martin Daniels

1993		Beethoven's 2nd as George Newton
1993		Heart and Souls as Harrison Winslow
1993		So I Married an Axe Murderer as Commandeered Driver
1993		Dave as Murray Blum

1992

as George Newton

1990		Taking Care of Business as Spencer Barnes
1990		The Muppets at Walt Disney World as Quentin Fitzwaller

1988		Midnight Run as Jonathan Mardukas
1988		You Can't Hurry Love as Mr. Glerman
1988		The Couch Trip as George Matlin

1987

as Jim Harrison

1986		King Kong! The Living Legend as Self
1986		Last Resort as George Lollar

1985

as Herb Derman

1984		The Woman in Red as Buddy
1984		The Lonely Guy as Warren

1983

as Lord Fancourt Babberly

1982

as Self

1981		The Great Muppet Caper as Nicky Holiday
1981		The Incredible Shrinking Woman as Vance Kramer

1980		Seems Like Old Times as Ira Parks
1980		It's My Turn as Homer

1979		Sunburn as Jake
1979		Real Life as Warren Yeager

1978		The Grass Is Always Greener Over the Septic Tank as Jim Benson
1978		Heaven Can Wait as Tony Abbott
1978		Just Me and You as Michael Lindsay
1978		The Meanest Men in the West as Arnie Doud, Harge Gang

1977		It Happened One Christmas as Joseph
1977		The Paul Simon Special as Self
1977		Thieves as Martin Cramer

1976

as Fred S. Wilson

1974

as Howard R. Chesser

1972

as Lenny Cantrow

1970

as Captain Aarfy Aardvark

1969

as Self

1968

as Dr. Hill

1964

as Bob

1954

as Drummer Boy (uncredited)

Writing

1985

… Writer

1977

… Writer

1974

… Adaptation

Directing

1974

… Director

1973

… Director

1969

… Director

Production

1985

… Producer

1969

… Producer