Credits

• 2019 · The Twilight Zone: A 60th Anniversary Celebration as Martin Sloan (archive footage)
• 2004 · Sam Peckinpah's West: Legacy of a Hollywood Renegade as Self (archive footage)
• 1984 · Bruce Lee: The Legend as Self
• 1983 · Hollywood Out-takes and Rare Footage as Self (archive footage) (uncredited)
• 1978 · Game of Death as Jim Marshall
• 1977 · Spectre as Dr. Ham Hamilton
• 1976 · Gibbsville as Ray Whitehead
• 1976 · Sherlock Holmes in New York as Mortimer McGrew
• 1975 · The Hindenburg as Edward Douglas
• 1975 · The Killer Elite as Lawrence Weyburn
• 1975 · Arena as Self (archive footage)
• 1975 · The Turning Point of Jim Malloy as Ray Whitehead
• 1974 · The Great Ice Rip-Off as Harkey Rollins
• 1974 · A Black Ribbon for Deborah as Ofenbauer
• 1974 · Bring Me the Head of Alfredo Garcia as Quill
• 1971 · The Neon Ceiling as Jones
• 1970 · Lovers and Other Strangers as Hal Henderson
• 1970 · McCloud as
• 1969 · They Shoot Horses, Don't They? as Rocky Gravo
• 1968 · Companions in Nightmare as Eric Nicholson
• 1968 · The Dick Cavett Show as Self - Guest
• 1967 · The Shuttered Room as Mike Kelton
• 1965 · Strange Bedfellows as Richard Bramwell
• 1965 · Invisible Diplomats as Brad
• 1964 · The Rogues as Tony Fleming
• 1964 · The Hollywood Palace as Self - Host
• 1963 · Kraft Suspense Theatre as Hugo Myrich
• 1963 · A Ticklish Affair as Key Weedon
• 1963 · For Love or Money as Sonny Smith
• 1962 · Five Miles to Midnight as David Barnes
• 1962 · Kid Galahad as Willy Grogan
• 1962 · The Tonight Show Starring Johnny Carson as Self
• 1962 · The Alfred Hitchcock Hour as Duke Marsden
• 1962 · That Touch of Mink as Roger
• 1961 · The Mike Douglas Show as Self
• 1961 · The Spiral Staircase as Stephen Warren
• 1959 · The Story on Page One as Larry Ellis
• 1959 · The Twilight Zone as Martin Sloan
• 1959 · Ask Any Girl as Evan Doughton
• 1958 · The Tunnel of Love as Dick Pepper
• 1958 · Teacher's Pet as Dr. Hugo Pine
• 1957 · The James Dean Story as Self
• 1957 · Desk Set as Mike Cutler
• 1956 · Tony Awards as Self - Presenter
• 1955 · The Desperate Hours as Chuck Wright
• 1954 · Young at Heart as Alex Burke
• 1954 · Climax! as Edgar Holt
• 1954 · Rear Window as Jeff's Editor (voice) (uncredited)
• 1953 · Torch Song as Cliff Willard
• 1953 · Arena as Hob Danvers
• 1953 · City That Never Sleeps as Johnny Kelly
• 1953 · The Girl Who Had Everything as Vance Court
• 1952 · Holiday for Sinners as Jason Kent
• 1952 · You for Me as Dr. Jeff Chadwick
• 1951 · Too Young to Kiss as John Tirsen
• 1951 · Come Fill the Cup as Boyd Copeland
• 1951 · Slaughter Trail as Ike Vaughn aka Murray
• 1951 · Schlitz Playhouse of Stars as Jimmy Sampson
• 1951 · Only the Valiant as Lt. William Holloway
• 1951 · Target Unknown as Capt. Reiner
• 1950 · Hunt the Man Down as Paul Bennett
• 1950 · Lux Video Theatre as
• 1950 · What's My Line? as Self - Panelist
• 1950 · Robert Montgomery Presents as Tony Marino
• 1949 · Tell It to the Judge as Alexander Darvac
• 1949 · Lust for Gold as Pete Thomas
• 1948 · Wake of the Red Witch as Samuel 'Sam' Rosen
• 1948 · Studio One as Philip Adams / Alan Fredericks
• 1948 · The Three Musketeers as Porthos
• 1948 · The Ed Sullivan Show as Self
• 1948 · The Woman in White as Walter Hartright
• 1947 · Escape Me Never as Caryl Dubrok
• 1943 · Old Acquaintance as Rudd Kendall
• 1943 · Air Force as Co-Pilot
• 1942 · Breakdowns of 1942 as Self
• 1942 · The Gay Sisters as Gig Young
• 1942 · The Mad Martindales as Peter Varney (as Byron Barr)
• 1942 · The Male Animal as Student (uncredited)
• 1941 · You're in the Army Now as Soldier
• 1941 · They Died with Their Boots On as Lt. Roberts (uncredited)
• 1941 · One Foot in Heaven as First Groom Asking for Dog Licence (uncredited)
• 1941 · The Tanks Are Coming as Jim Allen
• 1941 · Sergeant York as Marching Soldier (uncredited)
• 1941 · Dive Bomber as Abbott - Guinea Pig 2 Experiment 32 (uncredited)
• 1940 · Misbehaving Husbands as Floor Walker (as Byron Barr)