George Segal
- The Goldbergs: An '80s Rewind
2016 Himself / Albert 'Pops' Solomon
- Elsa & Fred
2014 John
- Heroes and Demons
2012 Elliott Klubershturf (segment "Ollie Klublershturf vs. The Nazis")
- Love & Other Drugs
2010 Dr. James Randall
- Ollie Klublershturf vs. the Nazis
2010 Elliott Klublershturf
- 2012
2009 Tony Delgatto
- Made for Each Other
2009 Mr. Jacobs
- My Wife Is Retarded
2007 Julie's Father
- Billy & Mandy's Big Boogey Adventure
2007 Horror (voice)
- Three Days to Vegas
2007 Dominic Spinuzzi
- Heights
2005 Rabbi Mendel
- Fielder's Choice
2005 JD
- Dinotopia: Quest for the Ruby Sunstone
2005 Albagon (voice)
- The Electric Piper
2003 Mayor Nick Dixon (voice)
- Houdini
1998 Beck
- Flirting with Disaster
1996 Ed Coplin
- The Mirror Has Two Faces
1996 Henry Fine
- The Cable Guy
1996 Steven's Father
- The Making of a Hollywood Madam
1996 Leo
- It's My Party
1996 Paul Stark
- The Babysitter
1995 Bill Holsten
- The Feminine Touch
1995 Sen. Beau Ashton
- To Die For
1995 Conference Speaker (uncredited)
- Direct Hit
1994 James Tronson
- Seasons of the Heart
1994 Ezra Goldstine
- Deep Down
1994 Gil
- Following Her Heart
1994 Harry
- Picture Windows: Song of Songs
1994 Ted Varnas
- Joshua Tree
1993 Lt. Franklin L. Severence
- Look Who's Talking Now!
1993 Albert
- Taking the Heat
1993 Kepler
- Me, Myself and I
1992 Buddy Arnett
- A Bear Called Arthur
1992 Billy
- For the Boys
1991 Art Silver
- Time of Darkness
1991 Grigory
- Look Who's Talking
1989 Albert
- All's Fair
1989 Colonel
- The Endless Game
1989 Mr. Miller
- Run for Your Life
1988 Alan Morani
- Many Happy Returns
1986 William 'Bud' Robinson
- Stick
1985 Barry
- Not My Kid
1985 Dr. Frank Bower
- The Zany Adventures of Robin Hood
1984 Robin Hood
- The Cold Room
1984 Hugh Martin
- Trackdown: Finding the Goodbar Killer
1983 John Grafton
- The Deadly Game
1982 Howard Trapp
- Killing 'em Softly
1982 Jimmy Skinner
- Carbon Copy
1981 Walter Whitney
- The Last Married Couple in America
1980 Jeff Thompson
- Lost and Found
1979 Adam
- Who Is Killing the Great Chefs of Europe?
1978 Robby Ross
- Rollercoaster
1977 Harry Calder
- Fun with Dick and Jane
1977 Dick Harper
- The Duchess and the Dirtwater Fox
1976 Charlie 'Dirtwater Fox' Malloy
- The Black Bird
1975 Executive Producer
- Russian Roulette
1975 Tim Shaver
- California Split
1974 Bill Denny
- The Terminal Man
1974 Harry Benson
- A Touch of Class
1973 Steve Blackburn
- Blume in Love
1973 Stephen Blume
- The Lie
1973 Andrew
- The Hot Rock
1972 Andrew Kelp
- Born to Win
1971 J
- Where’s Poppa?
1970 Gordon Hocheiser
- The Owl and the Pussycat
1970 Felix
- Loving
1970 Brooks Wilson
- The Bridge at Remagen
1969 Lt. Phil Hartman
- The Southern Star
1969 Dan
- No Way to Treat a Lady
1968 Morris Brummel
- Of Mice and Men
1968 George
- Bye Bye Braverman
1968 Morroe Rieff
- The Girl Who Couldn't Say No
1968 Franco
- The St. Valentine's Day Massacre
1967 Peter Gusenberg
- The Desperate Hours
1967 Glenn Griffin
- Who's Afraid of Virginia Woolf?
1966 Nick
- Lost Command
1966 Lt. Mahidi
- The Quiller Memorandum
1966 Quiller
- Death of a Salesman
1966 Biff Loman
- Ship of Fools
1965 David
- King Rat
1965 Corporal King
- The New Interns
1964 Dr. Tony "Shiv" Parelli
- Invitation to a Gunfighter
1964 Matt Weaver
- Act One
1963 Lester Sweyd
- The Longest Day
1962 U.S. Army Ranger
- The Young Doctors
1961 Dr. Howard
