Credits

• 2004 · Los Angeles Plays Itself as Steve in Two-Minute Warning (archive footage)
• 1981 · Inchon as David Feld
• 1980 · City in Fear as Vince Perrino
• 1980 · S.O.S. Titanic as John Jacob Astor
• 1980 · High Ice as Glencoe MacDonald
• 1979 · The Golden Gate Murders as Det. Sgt. Paul Silver
• 1978 · The Word as Steve Randall
• 1978 · Centennial as Narrator
• 1978 · Covert Action as Lester Horton
• 1978 · Nowhere to Run as Harry Adams
• 1978 · Superdome as Mike Shelley
• 1977 · Golden Rendezvous as Charles Conway
• 1977 · A Sensitive, Passionate Man as Michael Delaney
• 1977 · Mayday at 40,000 Feet as Capt. Pete Douglass
• 1977 · Warhead as Tony Stevens
• 1976 · Two-Minute Warning as Steve
• 1976 · Stalk the Wild Child as Dr. James Hazard
• 1976 · Joys as Self
• 1976 · The Swiss Conspiracy as David Christopher
• 1975 · Once Is Not Enough as Tom Colt
• 1974 · Dinah! as Self
• 1974 · Fer-de-Lance as Russ Bogan
• 1974 · Harry O as
• 1974 · Smile Jenny, You're Dead as Harry Orwell
• 1973 · Pioneer Woman as Robert Douglas
• 1973 · Such Dust as Dreams Are Made On as Harry Orwell
• 1973 · Hijack! as Jake Wilkenson
• 1973 · Police Story as
• 1973 · Birds of Prey as Harry Walker
• 1972 · Moon of the Wolf as Sheriff Aaron Whitaker
• 1972 · The Longest Night as Alan Chambers
• 1971 · O'Hara, U.S. Treasury as
• 1971 · Cannon as
• 1971 · O'Hara, United States Treasury: Operation Cobra as James O'Hara
• 1971 · Macho Callahan as Diego Callahan
• 1970 · Night Chase as Adrian Vico
• 1969 · Generation as Jim Bolton
• 1969 · Marooned as Ted Dougherty
• 1969 · Where It's At as A.C. Smith
• 1968 · The Shoes of the Fisherman as George Faber
• 1968 · The Green Berets as George Beckworth
• 1967 · Rowan & Martin's Laugh-In as Self
• 1967 · Warning Shot as Sgt. Tom Valens
• 1966 · Goldene Kamera Verleihung as Self
• 1964 · The Hollywood Palace as Self - Host
• 1963 · The Fugitive as Richard Kimble
• 1963 · My Six Loves as Marty Bliss
• 1962 · The Eleventh Hour as Hal Kincaid
• 1962 · The Merv Griffin Show as Self
• 1962 · Belle Sommers as Danny Castle
• 1962 · The New March of Dimes Presents: The Scene Stealers as Self
• 1961 · The Mike Douglas Show as Self - Co-Host
• 1961 · The Mike Douglas Show as Self
• 1961 · Target: The Corruptors! as
• 1961 · The Dick Powell Show as Kenneth 'Ken' Morgan
• 1961 · Man-Trap as Vince Biskay
• 1961 · Cain's Hundred as Dan Mullin
• 1961 · Twenty Plus Two as Tom Alder
• 1961 · Ring of Fire as Sergeant Steve Walsh
• 1961 · King of the Roaring 20's – The Story of Arnold Rothstein as Arnold Rothstein
• 1961 · Dondi as Dealey
• 1960 · Route 66 as Karno Starling
• 1960 · Checkmate as Len Kobalsky
• 1960 · Hell to Eternity as Sgt, Bill Hazen
• 1959 · Adventures in Paradise as Scotty Bell
• 1958 · Westinghouse Desilu Playhouse as Ross Ingraham
• 1958 · Naked City as Blair Cameron
• 1958 · Naked City as Carl Ashland
• 1958 · Lafayette Escadrille as Duke Sinclair
• 1957 · Alcoa Theatre as Mike Harper
• 1957 · Richard Diamond, Private Detective as Richard Diamond / Chuck Garrett
• 1956 · The Girl He Left Behind as Capt. Genaro
• 1956 · Dick Powell's Zane Grey Theatre as Dix Porter
• 1956 · Dick Powell's Zane Grey Theatre as Seth Larker
• 1956 · Showdown at Abilene as Verne Ward
• 1956 · U.S. Marshall as Arnie Hix
• 1956 · Francis in the Haunted House as Police Lieutenant Hopkins
• 1956 · Toy Tiger as Larry Tripps
• 1956 · Never Say Goodbye as Dave Heller
• 1955 · The Square Jungle as Jack Lindsay
• 1955 · All That Heaven Allows as Freddie Norton (uncredited)
• 1955 · Matinee Theater as
• 1955 · To Hell and Back as Lt Lee
• 1955 · Francis in the Navy as Lieutenant Anders
• 1955 · The Private War of Major Benson as Young Lieutenant
• 1955 · Chief Crazy Horse as Lt. Colin Cartwright
• 1955 · Cult of the Cobra as Rico Nardi
• 1955 · The Millionaire as David Barrett
• 1955 · The Millionaire as Peter Miller
• 1953 · General Electric Theater as Pat Howard
• 1952 · Yankee Buccaneer as Beckett
• 1952 · Francis Goes to West Point as Cpl. Thomas (as Dave Janssen)
• 1952 · No Room for the Groom as Soldier (scenes deleted)
• 1950 · Lux Video Theatre as Johnny Reynolds, Jr.
• 1950 · Lux Video Theatre as Ralph / Joe Davies