
2023 Genie (voice) (archive sound)
2020 Himself (archive footage)
2020 (archive footage)
2015 Dennis the Dog (voice)
2014 Henry Altmann
2014 Nolan
2014 In Memory Of
2014 Virgil Mitchler
2013 Father Monaghan
2013 Dwight H. Eisenhower
2013 Roger Stillman
2013 Simon Roberts
2012 (archive footage)
2012 Himself
2011 Mork (archive footage)
2011 Ramon / Lovelace (voice)
2011 Dr. Eddy
2010 (archive footage)
2010 Robin
2009 Lance Clayton
2009 Dan
2009 Writer
2009 Theodore Roosevelt
2009 Holden
2009 Theodore Roosevelt
2007 Reverend Frank
2007 Maxwell "Wizard" Wallace
2006 Theodore Roosevelt
2006 Bob Munro
2006 Gabriel Noone
2006 Ramon / Lovelace (voice)
2006 Tom Dobbs
2006 Himself
2006 Napoleon Cross (uncredited)
2006 Himself
2005 Fender (voice)
2005 Paul Barnell
2005
2004 Alan W. Hakman
2004 Pappass
2004 Himself
2004 Charlie Boyd / The Priest
2003 Hans Hänkie
2002 Walter Finch
2002 Writer
2002 Rainbow Randolph
2002 Seymour "Sy" Parrish
2002 Kevin Powalski
2002 Ivan 'Bob' Poppanoff the 'Russian Idol'
2001 Dr. Know (voice)
1999 Andrew
1999 Jakob Heym
1999 Merritt Rook
1999 Robin Williams
1998 Patch Adams
1998 Chris Nielsen
1998 Hugo Kingsley
1997 Sean Maguire
1997 Mel
1997 Professor Philip Brainard
1997 Dale Putley
1997 Genie (voice)
1996 Osric
1996 Armand Goldman
1996 Jack Powell
1996 The Professor (uncredited)
1996 Genie (voice)
1995 Dr. Kosevich
1995 Alan Parrish
1995 John Jacob Jingleheimer Schmidt (uncredited)
1995 Genie (voice) (uncredited)
1994 The Father
1994 Hector
1994 Tomas (uncredited)
1993 Producer
1993 Robert Ellison
1992 Genie / Peddler (voice)
1992 Leslie Zevo
1992 Batty Koda (voice)
1992 Robin Williams
1992 Robin Williams
1991 Parry
1991 Peter Banning / Peter Pan
1991 Cozy Carlisle
1991 Mime Class Instructor
1991 Kiwi (voice) (credited as Sudy Nim)
1991 Narrator (voice)
1990 Joey O'Brien
1990 Malcolm Sayer
1990 Everyman
1989 John Keating
1989
1989 Himself (uncredited)
1989 Robin
1989 Dr. J. Loren Pryor (voice) (as Doug Hill)
1988 King of the Moon
1988 Bill Lohmer – Air Conditioning Salesman (uncredited)
1988 Narrator (voice)
1987 Adrian Cronauer
1987 Robin Leach
1987 (voice)
1986 Jack Dundee
1986 Writer
1986 Jack Moniker
1986 Tommy Wilhelm
1986 Albert Einstein
1984 Vladimir Ivanoff
1983 Writer
1983 Donald Quinelle
1982 T.S. Garp
1982 The Frog / Prince Robin
1982 The Frog / Prince Robin
1982 Himself
1982 Mork (voice)
1980 Popeye
1979 Mork
1978 Henry
1978 Writer
1978 Director
1977 Lawyer / Man with Toothache (uncredited)
1977 Various
1977 Regular Performer
1977 The Circuit Breakers Member
1974 Mork