Acting

2002

as Skip McCoy (archive footage)

2000

as Self

1999		Linda Darnell: Hollywood's Fallen Angel
1999		Gene Tierney: A Shattered Portrait as Self - Actor

1997

as Self

1995		American Cinema as Narrator
1995		Wild Bill: Hollywood Maverick as Self

1992		Lincoln as Ward Hill Lamon (voice)
1992		John Wayne's 'The Alamo' as Jim Bowie

1991		Preminger: Anatomy of a Filmmaker as Self (archive footage)
1991		True Colors as Sen. James Stiles

1989

as Enoch Rucker Blakeslee

1988		James Stewart: A Wonderful Life as Self (archive footage)
1988		Once Upon a Texas Train as Capt. Owen Hayes

1987

as Sheriff Mapes

1986		Marilyn Monroe: Beyond the Legend as Self - Narrator
1986		The Spencer Tracy Legacy: A Tribute by Katharine Hepburn as Self

1985

as Joe Steiner

1984

as Ben Caxton

1982		Who Dares Wins as Secretary of State Arthur Currie
1982		Hanky Panky as Ransom
1982		National Lampoon's Movie Madness as Stan Nagurski ("Municipalians")

1981

as Tom Goodenough

1980

as Judge Parke Denison

1979		Bear Island as Otto Gerran
1979		Mr. Horn as Al Sieber

1978		The Swarm as Gen. Thaddeus Slater
1978		Coma as Dr. Harris

1977		Rollercoaster as Agent Hoyt
1977		The Domino Principle as Tagge
1977		Twilight's Last Gleaming as Gen. Martin MacKenzie - Commanding General SA

1976		The Sell Out as Sam Lucas
1976		To the Devil a Daughter as John Verney

1975

as Will Spence

1974

as Mr. Ratchett

1973

as Lieutenant Max Brock

1972

as Red Dillon

1971

as (archive footage)

1970

as Dr. Emmett Taulbee

1969		Death of a Gunfighter as Marshal Frank Patch
1969		A Talent for Loving as Major William Patten

1968

as Det. Daniel Madigan

1967

as Lije Evans

1966

as Col. Tom Rossiter

1965

as Captain Eric Finlander, U.S.N.

1964		Cheyenne Autumn as Capt. Thomas Archer
1964		The Long Ships as Rolfe
1964		Flight from Ashiya as L:t. Col. Glenn Stevenson

1962		How the West Was Won as Mike King
1962		Exercise No. One

1961		Judgment at Nuremberg as Tad Lawson
1961		Two Rode Together as First Lt. Jim Gary
1961		The Secret Ways as Michael Reynolds

1960

as Jim Bowie

1959		Warlock as Johnny Gannon
1959		The Trap as Ralph Anderson

1958		The Tunnel of Love as August 'Augie' Poole
1958		The Law and Jake Wade as Clint Hollister

1957		Time Limit as Col. William Edwards
1957		Saint Joan as The Dauphin, Charles VII

1956		The Last Wagon as Comanche Todd
1956		Run for the Sun as Michael 'Mike' Latimer
1956		Backlash as Jim Slater
1956		Boy with a Knife as Narrator

1955		A Prize of Gold as Sgt. Joe Lawrence
1955		The Cobweb as Dr. Stewart 'Mac' McIver

1954		Broken Lance as Ben Devereaux
1954		Garden of Evil as Fiske
1954		Hell and High Water as Capt. Adam Jones

1953		Take the High Ground! as Sgt. Thorne Ryan
1953		Pickup on South Street as Skip McCoy
1953		Destination Gobi as Sam McHale

1952		My Pal Gus as Dave Jennings
1952		O. Henry's Full House as Johnny Kernan (segment "The Clarion Call")
1952		Don't Bother to Knock as Jed Towers
1952		Red Skies of Montana as Cliff Mason

1951		The Frogmen as Lt. Cmdr. John Lawrence
1951		Halls of Montezuma as Lt. Carl Anderson

1950		No Way Out as Ray Biddle
1950		Panic in the Streets as Lt. Cmdr. Clinton 'Clint' Reed M.D.
1950		Night and the City as Harry Fabian

1949		Slattery's Hurricane as Lt. Willard Francis Slattery
1949		Down to the Sea in Ships as Dan Lunceford

1948		Yellow Sky as Dude
1948		Road House as Jefferson T. 'Jefty' Robbins
1948		The Street with No Name as Alec Stiles

1947

as Tommy Udo

Production

1965

… Producer

1961

… Producer

1957

… Producer