 | Everything Is Terrible! The Movie (2009) as Self (archive footage) |
 | Proteus: A Nineteenth Century Vision (2004) as The Ancient Mariner (voice) |
 | L.A. Law: The Movie (2002) as Leland McKenzie |
 | Todd McFarlane's Spawn 2 (1998) as Cogliostro |
 | Hard Rain (1998) as Henry Sears |
 | Corwin (1996) as Self |
 | A Child Is Missing (1995) as Riley Hallihan |
 | Truman (1995) as Henry L. Stimson |
 | Panther (1995) as J. Edgar Hoover |
 | Marilyn & Bobby: Her Final Affair (1993) as J. Edgar Hoover |
 | Back to the Future Part III (1990) as Barbwire Salesman |
 | Day One (1989) as President Harry S. Truman |
 | Mickey's 60th Birthday (1988) as Leland McKenzie |
 | Moving Target (1988) as Arthur Cambridge |
 | Your Alcohol I.Q. (1988) as Self |
 | Wall Street (1987) as Cromwell |
 | Jay Leno's Family Comedy Hour (1987) as Self |
 | Six Against the Rock (1987) as Warden James Johnston |
 | The Last Days of Patton (1986) as Gen. Dwight D. Eisenhower |
 | L.A. Law: Pilot (1986) as Leland McKenzie |
 | Warning Sign (1985) as Dr. Nielsen |
 | Pale Rider (1985) as Coy LaHood |
 | Mask (1985) as Abe |
 | The Falcon and the Snowman (1985) as Dr. Lee |
 | Malice in Wonderland (1985) as Louis B. Mayer |
 | Missing Children: A Mother's Story (1982) as Hunter Burgess |
 | The Thing (1982) as Dr. Copper |
 | Bitter Harvest (1981) as Dr. Morton Freeman |
 | People vs. Jean Harris (1981) as Judge Russell R. Leggett |
 | The Ordeal of Dr. Mudd (1980) as Edwin Stanton |
 | Bogie (1980) as Jack Warner |
 | Being There (1979) as Dr. Robert Allenby |
 | Meteor (1979) as Secretary of Defense |
 | Churchill and the Generals (1979) as Gen. Dwight D. Eisenhower |
 | Prophecy (1979) as Trevor Isley |
 | First, You Cry (1978) as Dr. Brennerman |
 | An Enemy of the People (1978) as Aslaksen |
 | It Happened One Christmas (1977) as Peter Bailey |
 | The Court-Martial of George Armstrong Custer (1977) as President Ulysses S. Grant |
 | Riding with Death (1976) as Leonard Driscoll |
 | The Hindenburg (1975) as Lehman |
 | The Day of the Locust (1975) as Claude Estee |
 | The Crazy World of Julius Vrooder (1974) as Father |
 | The Autobiography of Miss Jane Pittman (1974) as Master Bryant |
 | The Terminal Man (1974) as Dr. John Ellis |
 | The Hospital (1971) as Dr. Welbeck |
 | The Sporting Club (1971) as Spengler |
 | The Lost Man (1969) as Barnes |
 | Shadow Game (1969) as Jerry Arnst |
 | Petulia (1968) as Motel Receptionist |
 | Love with the Proper Stranger (1963) as Accountant (uncredited) |
