Filmography
| Year | Title | Role |
| 1979 | Salem's Lot (1981) | Jason Burke |
| 1979 | BATTLESTAR GALACTICA Trilogy | President Adar |
| 1978 | Damien: Omen II | Bill Atherton |
| 1973 | Battle for the Planet of the Apes | Mandemus, Keeper of the Armory |
| 1971 | Earth II | President Charles Carter Durant |
| 1964 | The Carpetbaggers | "Mac" McAllister |
| 1962 | Advise and Consent | The Vice President |
| 1953 | Donovan's Brain | Dr. Patrick J. Cory |
| 1950 | The Capture | Lin Vanner/Lindley Brown |
| 1948 | Johnny Belinda | Dr. Robert Richardson |
| 1947 | The Unfaithful | Larry Hannaford |
| 1946 | The Dark Mirror | Dr. Scott Elliott |
| 1939 | Remember? | Schuyler `'Sky'` Ames |
| 1939 | Calling Dr. Kildare | Dr. James 'Jimmy' Kildare |
| 1938 | Holiday (1938) | Ned Seton |
| 1938 | King of the Newsboys | Jerry Flynn |
| 1936 | Hearts in Bondage | Director |
| 1935 | Spring Tonic | Caleb Enix |
| 1934 | She Learned About Sailors | Larry Wilson |
| 1933 | My Weakness | Ronnie Gregory |
| 1933 | State Fair (1933) | Pat Gilbert |
| 1933 | Don't Bet on Love | Bill McCaffery |
| 1932 | Night World | Michael Rand |
| 1932 | Impatient Maiden | Actor |
| 1932 | Okay, America! | Larry Wayne |
| 1931 | The Spirit of Notre Dame | Bucky O'Brien |
| 1931 | Up for Murder | Robert Marshall |
| 1930 | All Quiet on the Western Front (1930) | Paul Baumer |
| 1930 | Common Clay | Hugh Fullerton |
| 1930 | Doorway to Hell | Louie Ricarno |
| 1930 | East Is West | Billy Benson |
| 1929 | The Kiss (1988) | Pierre Lassalle |
