Filmography
| Year | Title | Role |
| 1999 | Magnolia | Earl Partridge |
| 1998 | Beloved (1998) | Mr. Bodwin |
| 1995 | The Great American West | Narrator |
| 1994 | The Paper | Graham Keighley |
| 1994 | Little Big League | Thomas Heywood |
| 1993 | The Adventures of Huck Finn (1993) | The King |
| 1993 | Philadelphia | Charles Wheeler |
| 1991 | Mark Twain and Me | Mark Twain |
| 1991 | Black Rainbow | Walter Travis |
| 1990 | Quick Change | Chief Rotzinger |
| 1989 | Dream a Little Dream | Coleman Ettinger |
| 1989 | Parenthood | Frank Buckman |
| 1988 | The Christmas Wife | John Tanner |
| 1988 | The Good Mother (1988) | Muth |
| 1983 | Something Wicked This Way Comes | Charles Halloway |
| 1983 | The Day After (1983) | Dr. Russell Oakes |
| 1982 | Burden of Dreams | Fitzcarraldo |
| 1981 | The Legend of the Lone Ranger | President Ulysses S. Grant |
| 1980 | Melvin and Howard | Howard Hughes |
| 1980 | F.D.R. The Last Year | President Franklin D. Roosevelt |
| 1980 | Haywire (1980) | Leland Hayward |
| 1980 | Raise the Titanic | Admiral James Sandecker |
| 1978 | A Christmas to Remember | Daniel Larson |
| 1977 | Julia (1977) | Hammett |
| 1976 | All the President's Men | Ben Bradlee |
| 1975 | A Boy and His Dog | Lou Craddock |
| 1973 | Pat Garrett and Billy the Kid | Gov. Lew Wallace |
| 1972 | The War Between Men and Women | Stephen Kozlenko |
| 1972 | The House Without a Christmas Tree | Jamie Mills |
| 1971 | Murders in the Rue Morgue (1971) | Cesar Charron |
| 1970 | Tora! Tora! Tora! | Lt. Gen. Walter C. Short |
| 1970 | The Ballad of Cable Hogue | Cable Hogue |
| 1968 | Once Upon a Time in the West | Cheyenne |
| 1968 | The Night They Raided Rochdale College | Raymond Paine |
| 1967 | The St. Valentine's Day Massacre | Al Capone |
| 1967 | Hour of the Gun | Doc Holliday |
| 1966 | Any Wednesday | John Cleves |
| 1966 | A Big Hand for the Little Lady | Henry Drummond |
| 1965 | A Thousand Clowns | Murray |
| 1963 | Act One | George S. Kaufman |
| 1962 | Long Day's Journey Into Night (1962) | Jamie Tyrone |
| 1962 | Tender Is the Night | Dr. Richard "Dick" Diver |
