Acting

2004

as Roy Morgan/Roy Martin in He Walked By Night (archive footage)

2002

as Cpl. Denno (archive footage) (uncredited)

1985

as Narrator

1982		Bix: Ain't None of Them Play Like Him Yet as Self
1982		Knight Rider: Knight of the Phoenix as Wilton Knight
1982		Egypt: Quest for Eternity as Narrator (Self)

1980

as Johnny Hyde

1979		Being There as Vladimir Skrapinov
1979		Land of Celtic Ghosts as Himself
1979		The Rebels as Duke of Kentland
1979		Planet Mars as Narrator

1978		The Great Bank Hoax as Manny Benchly
1978		A Connecticut Yankee in King Arthur's Court as King Arthur

1977		The Island of Dr. Moreau as Sayer of the Law
1977		Flood! as John Cutler
1977		Stonestreet: Who Killed the Centerfold Model? as Elliott Osborn

1976		21 Hours at Munich as Willy Brandt
1976		Mansion of the Doomed as Dr. Leonard Chaney
1976		Time Travelers as Dr. Joshua Henderson (1871)

1975		Valley Forge
1975		Judgment: The Court Martial of Lieutenant William Calley as George Latimer

1973		Maneater as Carl Brenner
1973		The Birdmen as Schiller
1973		...And Millions Die! as Dr Douglas Pruitt

1972		Rage as Dr. Roy Caldwell
1972		The Bounty Man as Angus Keough
1972		Chato's Land as Nye Buell
1972		Assignment: Munich as Maj. Barney Caldwell

1971		The Death of Me Yet as Robert Barnes
1971		City Beneath the Sea as The President
1971		They've Killed President Lincoln! as Host / Narrator

1970		The Andersonville Trial as Henry Wirz
1970		Sole Survivor as Brig. Gen. Russell Hamner

1969		Hans Brinker as Dr. Boeker
1969		Love Is a Funny Thing as Acteur

1968

as Narrator

1965		The Satan Bug as Dr. Gregor Hoffman
1965		Let My People Go: The Story of Israel as Narrator (voice)

1964		Trial at Nuremberg as Narrator
1964		Four Days In November as Narrator (voice)

1963		Kings of the Sun as Ah Min
1963		The Yanks Are Coming as Narrator (voice)

1962

as Adolf Hitler

1961

as Steve Fallon

1960		Visa to Canton as Don Benton
1960		For the Love of Mike as Father Phelan
1960		Portrait in Black as Howard Mason
1960		Five Branded Women as Eric Reinhardt

1959		The Ambitious One as George Rancourt
1959		Jons und Erdme as Wittkuhn

1958		Love and Troubles as Paolo Martelli
1958		The Brothers Karamazov as Ivan Karamazov

1957		Time Limit as Maj. Harry Cargill
1957		Miracles of Thursday as Martino

1956		Moby Dick as Ishmael
1956		Finger of Guilt as Reginald 'Reggie' Wilson
1956		The Extra Day as Joe Blake

1955		The Swindle as Picasso
1955		The Golden Vein as Ing. Stefano Manfredi
1955		Cartouche as Il conte Jacques de Maudy
1955		Canyon Crossroads as Larry Kendall

1954		La Strada as Il 'Matto'
1954		Jailbirds as Doctor Stefano Luprandi
1954		The Good Die Young as Joe Halsey
1954		The Stranger's Hand as Joe Hamstringer

1953

as George S. Headley

1951		Decision Before Dawn as Lt. Dick Rennick
1951		Fixed Bayonets! as Cpl. Denno
1951		The House on Telegraph Hill as Alan Spender
1951		Fourteen Hours as Robert Cosick

1950

as Larry Nelson

1949		Tension as Warren Quimby
1949		Reign of Terror as Maximilian Robespierre
1949		Roseanna McCoy as Mounts Hatfield
1949		He Walked by Night as Roy Martin / Roy Morgan

1947		Cry Wolf as James Caldwell Demarest
1947		Repeat Performance as William Williams