Self – Interviewee (voice)
The Water Is Finally Blue: The Untold Story of Robert Altman's O.C. and Stiggs (2023)
Self (archive footage) (uncredited)
Who Done It: The Clue Documentary (2022)
Mr. Sunnyside
Melons (2022)
Modern Doug
A Futile and Stupid Gesture (2018)
Himself
Tim's Vermeer (2013)
Grandpa Rich
Ha/lf (2013)
Ken
And They're Off (2011)
Clive
Oliver's Ghost (2011)
(archive footage)
2Everything2Terrible2: Tokyo Drift (2010)
Holbrook
Killers (2010)
Jeffry Morton
Relative Strangers (2006)
Self
The Aristocrats (2005)
Barney
Come Away Home (2005)
Martin Grant
A Boyfriend for Christmas (2004)
Wayne Simonelli
The Year That Trembled (2002)
Skeptical Husband
Sister Mary Explains It All (2001)
Charles
Attention Shoppers (2000)
Yesterday's Tomorrows (1999)
Virgil Payne
Zack and Reba (1998)
Richard Rich
Richie Rich's Christmas Wish (1998)
Doug Robinson
Beverly Hills Family Robinson (1997)
D.J.
Jingle All the Way (1996)
Johnnie Sparkle
Edie & Pen (1996)
Quote Reader
Sex, Censorship and the Silver Screen (1996)
Bart Gafooley
How the West Was Fun (1994)
Dan Barnes
Mr. Write (1994)
Norman Roberts
The Day My Parents Ran Away (1993)
Justin Gregory
Mrs. Doubtfire (1993)
“Love Thy Neighbor" Host
Sex, Shock & Censorship in the 90's (1993)
Donald Burbank
Miracle Beach (1992)
Art
Dance with Death (1992)
Martin Mull
The Player (1992)
Martin Mull: Talent Takes a Holiday (1992)
Ted's Attorney
Ted & Venus (1991)
Tom Arnold: The Naked Truth (1991)
Psychiatrist
Far Out Man (1990)
Maris
Ski Patrol (1990)
Dr. Bruekner
Think Big (1989)
William Carson III
Cutting Class (1989)
Portrait of a White Marriage (1988)
An All-Star Toast to the Improv (1988)
Archie Powell
Rented Lips (1987)
Martin Mull Live from North Ridgeville, Ohio (1987)
Pat Coletti
O.C. and Stiggs (1987)
Carson Boundy
Home Is Where the Hart Is (1987)
Jonathan Winters: On the Ledge (1987)
Tony Dugdale
The Boss' Wife (1986)
Governor Ambrose Peasley
Pecos Bill (1986)
Himself - Host
The History of White People in America: Volume II (1986)
Colonel Mustard
Clue (1985)
Host
The History of White People in America (1985)
Elliot
California Girls (1985)
Frank Maris
Lots of Luck (1985)
Warren Fitzpatrick
Bad Manners (1984)
Mel Shaver (uncredited)
Sunset Limousine (1983)
Tang / Arthur Lyle
Flicks (1983)
Ron
Mr. Mom (1983)
Drug Store Clerk (uncredited)
Private School (1983)
Self - Sketch Performer
Grandpa, Will You Run with Me? (1983)
Twilight Theatre (1982)
Magic with the Stars (1982)
Dick Ebersol
Take This Job and Shove It (1981)
Mr. Peache
My Bodyguard (1980)
Harvey
Serial (1980)
The Chevy Chase National Humor Test (1979)
Eric Swan
FM (1978)
A Different Approach (1978)
Executive Producer
Writer
Creator
Music Producer
Jump (1971)