Filmography
| Year | Title | Role |
| 2007 | Battle for Terra | Doron |
| 2006 | The Ultimate Gift | Red Stevens |
| 2006 | The Trail of Tears: Cherokee Legacy | Voice |
| 2005 | Dust to Glory | Self |
| 2004 | The Notebook (2004) | Duke |
| 2002 | Divine Secrets of the Ya-Ya Sisterhood | Shep Walker |
| 2001 | Atlantis: The Lost Empire | Commander Rourke |
| 2000 | Space Cowboys | Tank Sullivan |
| 1998 | Twilight (1998) | Raymond Hope |
| 1997 | The Hidden Dimension | Narrator |
| 1996 | My Fellow Americans | President Matt Douglas |
| 1994 | Maverick (1994) | Marshal Zane Cooper |
| 1993 | Barbarians at the Gate | F. Ross Johnson |
| 1993 | Fire in the Sky | Sheriff Frank Walters |
| 1990 | Decoration Day | Albert Sidney Finch |
| 1989 | My Name is Bill W. (1989) | Dr. Robert `'Dr. Bob'` Holbrook Smith |
| 1985 | Murphy's Romance | Murphy Jones |
| 1984 | Heartsounds | Harold Lear |
| 1982 | Victor/Victoria | King Marchand |
| 1980 | H.E.A.L.T.H. | Harry Wolff |
| 1974 | The Castaway Cowboy | Lincoln Costain |
| 1969 | Support Your Local Sheriff | Jason McCullough |
| 1969 | The Racing Scene | Narrator, Producer |
| 1968 | How Sweet It Is! | Grif Henderson |
| 1967 | Hour of the Gun | Wyatt Earp |
| 1966 | Grand Prix | Pete Aron |
| 1966 | A Man Could Get Killed | William Beddoes |
| 1966 | Duel at Diablo | Jess Remsberg |
| 1964 | 36 Hours | Major Jefferson Pike |
| 1964 | The Americanization of Emily | Lt. Cmdr. Charles Edward Madison |
| 1963 | The Great Escape (1963) | Flight Lt. Hendley 'The Scrounger' |
| 1963 | The Thrill of It All | Dr. Gerald Boyer |
| 1963 | Move Over, Darling | Nicholas Arden |
| 1961 | The Children's Hour (1961) | Doctor Joe Cardin |
| 1959 | Alias Jesse James | Actor |
| 1958 | Darby's Rangers | Col. William Orlando Darby |
| 1957 | Sayonara | Capt. Bailey |
