Actor
- The Goods: Live Hard, Sell Hard (2009) .... Ben Selleck
- Last Chance Harvey (2009) .... Brian
- Last Will (2009) .... Det. Sloan
- Streisand: Live in Concert (2009) .... Himself - Audience (uncredited)
- Psych High Noon-Ish (2009) .... Hank Mendel
- Lost City Raiders (2008) .... Pa Kubiak
- President Hollywood (2008) .... Governor Robert Ritchie (archive footage) (uncredited)
- Mysterious (2008) .... Terry Bamba
- Bitter/Sweet (2008) .... Calvert Jenkins
- Law & Order: Special Victims Unit Lunacy (2008) .... Col. Richard Finley
- The Hunting Party (2007) .... Franklin Harris
- The American Standards (2007) .... Jack Jennings
- Wedding Wars (2006) .... Governor Conrad Welling
- Legends Ball (2006) .... Himself
- The Alibi (2006) .... Robert Hatch
- Category 7: The End of the World (2005) .... Donny Hall
- AFI's 100 Years, 100 'Movie Quotes': The Greatest Lines from American Film (2005) .... Himself (also archive footage)
- Widow on the Hill (2005) .... Hank Cavanaugh
- The Contender Tears of Pain and Sorrow (2005) .... Himself (uncredited)
- The Contender Series Finale (2005) .... Himself (uncredited)
- 101 Most Unforgettable SNL Moments (2004) .... Himself (archive footage)
- 101 Biggest Celebrity Oops (2004) .... Himself (archive footage)
- The Reagans (2003) .... Ronald Reagan
- A Guy Thing (2003) .... Ken Cooper
- Antwone Fisher (2003) .... The Captain (uncredited)
- Catch Me If You Can (2002) .... Jack Barnes
- The Master of Disguise (2002) .... Fabbrizio Disguisey
- The West Wing Posse Comitatus (2002) .... Governor Robert Ritchie, R-FL
- The West Wing College Kids (2002) .... Governor Robert Ritchie, R-FL
- The West Wing Game On (2002) .... Governor Robert Ritchie, R-FL
- Timeless: Live in Concert (2001) .... Himself (uncredited)
- Traffic (2001) .... General Ralph Landry
- Children of Fortune (2000) .... Dave Passenger
- Skyscrapers: Going Up (2000) .... Narrator
- To Love, Honor & Betray (1999) .... Ted Brennan
- Body Human 2000: Love, Sex & the Miracle of Birth (1999) .... Host
- A Marriage of Convenience (1998) .... Mason Whitney
- Behind the Planet of the Apes (1998) .... Dr. Cornelius (archive footage)
- Lewis & Clark & George (1998) .... Reverend Red
- America's Great Parks (1998) .... Narrator
- Goodbye America (1997) .... Ed Johnson
- Aroma del Copal, El (1997) .... John Richardson
- World of Discovery (1997) .... Narrator (3 episodes, 1994-1995)
- My Brother's War (1997) .... John Hall
- The Haunted Sea (1997) .... Captain Ramsey
- Roseanne Lanford's Elite (1997) .... Edgar Wellman Jr.
- Roseanne Some Enchanted Merger (1997) .... Edgar Wellman Jr.
- To Face Her Past (1996) .... Greg Hollander
- Hart to Hart: Harts in High Season (1996) .... Elliott Manning
- Hijacked: Flight 285 (1996) .... Ron Showman
- Cannes Man (1996) .... Himself
- Blood Money (1996) .... Lt. Kincaid
- Extreme (1995) .... Reese Wheeler (7 episodes, 1995)
- The Expert (1995) .... Warden Munsey
- Tracks of a Killer (1995) .... David Hawkner
- Terminal Virus (1995) .... McCabe
- A Perry Mason Mystery: The Case of the Grimacing Governor (1994) .... Ryan Allison
- Parallel Lives (1994) .... Professor Spencer Jones
- Indecent Behavior II (1994) .... Liam O'Donnell
- Relative Fear (1994) .... Det. Atwater
- We the People (1994) .... Alan Lesard
- Gunsmoke: The Long Ride (1993) .... John Parsley
- Visions of Murder (1993) .... Hal
- Paper Hearts (1993) .... Henry
- The Sands of Time (1992) .... Col. Acoca
- Gas, Food Lodging (1992) .... John Evans
- City Boy (1992) .... Tom McLean
- And the Sea Will Tell (1991) .... Mac Graham
- Ted and Venus (1991) .... Max Waters (as Jim Brolin)
- Nightmare on the 13th Floor (1990) .... Doctor Alan Lanier
- High Score (1990) .... Budetzky
- Voice of the Heart (1990) .... Victor Mason
- Back Stab (1990) .... Cliff Murphy
- Bad Jim (1990) .... B.D. Sweetman
- The Earth Day Special (1990) .... Himself
- Finish Line (1989) .... Martin Shrevelow
- Deep Dark Secrets (1987) .... Michael Wakefield
- Hold the Dream (1986) .... Ross Nelson
- Intimate Encounters (1986) .... Nick Atkins
- Beverly Hills Cowgirl Blues (1985) .... Harry Wilde
- Pee-wee's Big Adventure (1985) .... Himself - as PeeWee
- Hotel (1983) .... Peter McDermott (95 episodes, 1983-1988)
- Hotel (1983) .... Peter McDermott
- Cowboy (1983) .... Ward McNally
- White Water Rebels (1983) .... Mike McKay
- Mae West (1982) .... Jim Timony
- The Ambush Murders (1982) .... Paul Marshall
- High Risk (1981) .... Stone
- Night of the Juggler (1980) .... Sean Boyd
- The Amityville Horror (1979) .... George Lutz
- Steel Cowboy (1978) .... Clayton Pfanner
- Capricorn One (1978) .... Col. Charles Brubaker
- The Car (1977) .... Wade Parent
- Gable and Lombard (1976) .... Clark Gable
- Westworld (1973) .... John Blane
- Trapped (1973) .... Chuck Brenner
- Class of '63 (1973) .... Joe Hart
- Short Walk to Daylight (1972) .... Tom Phelan
- Skyjacked (1972) .... Jerome K. Weber
- Love, American Style Love and the Duel/Love and the Note/Love and the Young Unmarrieds (1971) .... (segment "Love and the Note")
- Marcus Welby, M.D. (1969) .... Dr. Steven Kiley (170 episodes, 1969-1976)
- Marcus Welby, M.D. (1969) .... Dr. Steven Kiley
- The Boston Strangler (1968) .... Det. Sgt. Phil Lisi
- The Cape Town Affair (1967) .... Skip McCoy
- Way... Way Out (1966) .... Ted Robertson
- Fantastic Voyage (1966) .... Technician
- Our Man Flint (1966) .... Technician (uncredited)
- Von Ryan's Express (1965) .... Private Ames
- John Goldfarb, Please Come Home (1965) .... Notre Dame quarterback (uncredited)
- Dear Brigitte (1965) .... Student at Leaf Rally (uncredited)
- Goodbye Charlie (1964) .... Party Guest (uncredited)
- Take Her, She's Mine (1963) .... Mel; Mollie's Student Friend at Airport (uncredited)
- Pensacola: Wings of Gold (1997) .... (unknown episodes)
- My Brother's War (1997) ....
- The Young Riders (1989) .... (unknown episodes)
- Hotel (1983) .... (9 episodes, 1985-1988)
- The American Standards (2007) .... producer
- Pensacola: Wings of Gold (1997) .... executive producer (6 episodes, 1998)
- We the People (1994) .... executive producer