Credits

• 2009 · The World of Peter Sellers as
• 2007 · The Deep as Hughie Warriner
• 1995 · Orson Welles: The One-Man Band as Self (segment "The deep") (archive footage)
• 1992 · John Wayne's 'The Alamo' as Col. William Travis
• 1974 · Welcome to Arrow Beach as Jason Henry
• 1973 · Night Watch as John Wheeler
• 1973 · F for Fake as Self
• 1972 · Escape to the Sun as Major Kirsanov
• 1971 · Columbo as Emmet Clayton
• 1970 · Night Gallery as Steven Macy (segment “The Caterpillar”)
• 1970 · WUSA as Farley
• 1969 · Will the Real Mr. Sellers... as Self
• 1969 · The Magic Christian as Hamlet
• 1969 · He and She as He
• 1969 · The Fight for Rome II - The Betrayal as Cethegus
• 1968 · The Fight for Rome as Cethegus
• 1968 · Appointment in Beirut as Jeff Miller
• 1968 · The Dick Cavett Show as Self - Guest
• 1968 · The Charge of the Light Brigade as Russian Prince (Uncredited)
• 1968 · A Dandy in Aspic as Eberlin
• 1967 · Dial M for Murder as Tony Wendice
• 1967 · Rowan & Martin's Laugh-In as Self
• 1966 · The Spy with a Cold Nose as Dr. Francis Trevelyan
• 1965 · Life at the Top as Joe Lampton
• 1965 · Darling as Miles Brand
• 1965 · The Love Goddesses as (archive footage)
• 1964 · The Outrage as Husband
• 1964 · Of Human Bondage as Philip Carey
• 1964 · MGM 40th Anniversary as
• 1963 · The Ceremony as Sean McKenna
• 1963 · The Running Man as Rex Black
• 1963 · The Danny Kaye Show as Self
• 1962 · A Girl Named Tamiko as Ivan Kalin
• 1962 · The Manchurian Candidate as Raymond Shaw
• 1962 · The Merv Griffin Show as Self
• 1962 · The Tonight Show Starring Johnny Carson as Self
• 1962 · The Wonderful World of the Brothers Grimm as Wilhelm Grimm / Cobbler (segment "The Cobbler and the Elves")
• 1962 · The Flood as Narrator
• 1962 · Walk on the Wild Side as Dove Linkhorn
• 1961 · Summer and Smoke as John Buchanan Jr.
• 1961 · Two Loves as Paul Lathrope
• 1961 · The Long and the Short and the Tall as Pvt. 'Bammo' Bamforth
• 1960 · BUtterfield 8 as Weston Liggett
• 1960 · The Alamo as Col. William Travis
• 1959 · Expresso Bongo as Johnny Jackson
• 1959 · Room at the Top as Joe Lampton
• 1959 · Power Among Men as Narrator
• 1958 · The Silent Enemy as Lieutenant "Buster" Crabb, R.N.V.R.
• 1957 · The Truth About Women as Sir Humphrey Tavistock
• 1957 · After the Ball as Walter de Frece
• 1957 · Tonight Starring Jack Paar as Self
• 1956 · Three Men in a Boat as George
• 1955 · Storm Over the Nile as John Durrance
• 1955 · Alfred Hitchcock Presents as Arthur Williams
• 1955 · I Am a Camera as Christopher Isherwood
• 1954 · Romeo and Juliet as Romeo
• 1954 · King Richard and the Crusaders as Sir Kenneth of the Leopard
• 1954 · The Good Die Young as Miles 'Rave' Ravenscourt
• 1953 · Innocents in Paris as Francois
• 1953 · Women of Twilight as Jerry Nolan
• 1952 · A Killer Walks as Ned Harsten
• 1952 · I Believe in You as Jordie Bennett
• 1951 · There Is Another Sun as Mag Maguire
• 1951 · Scarlet Thread as Freddie
• 1950 · The Black Rose as Edmond
• 1950 · The Dancing Years as Minor Role (uncredited)
• 1950 · Cairo Road as Lt. Mourad
• 1950 · What's My Line? as Self - Panelist
• 1950 · What's My Line? as Self - Mystery Guest
• 1949 · Landfall as PO Hooper
• 1949 · Man on the Run as Detective Sergeant Lawson
• 1949 · The Man from Yesterday as John Matthews
• 1948 · House of Darkness as Francis Merryman