Actor
Stargate SG-1: The Alliance (2005) (VG) (filming) (voice) .... Brigadier General Jack O'Neill
Stargate Atlantis: Rising (2004) (TV) .... Brigadier General Jack O'Neill
"Stargate SG-1" (1997) TV Series .... Jack O'Neill (1997-2005)
Firehouse (1997) (TV) .... Lt. Michael Brooks
Fallout: A Post-Nuclear Role-Playing Game (1997) (VG) (voice) .... Killian
Stargate SG-1: Children of the Gods (1997) (TV) .... Col. Jack O'Neill
Pandora's Clock (1996) (TV) .... Capt. James Holland
Past the Bleachers (1995) (TV) .... Bill Parish
"Legend" (1995) TV Series .... Ernest Pratt/Nicodemus Legend
MacGyver: Trail to Doomsday (1994) (TV) .... Angus MacGyver
Beyond Betrayal (1994) (TV) .... Bradley Matthews
MacGyver: Lost Treasure of Atlantis (1994) (TV) .... Angus MacGyver
Through the Eyes of a Killer (1992) (TV) .... Ray Bellano
In the Eyes of a Stranger (1992) (TV) .... Jack Rourke
Ordinary Heroes (1986) .... Tony Kaiser
"MacGyver" (1985) TV Series .... MacGyver
MacGyver (1985) (TV) .... Angus MacGyver
Odd Jobs (1984) .... Spud
"Emerald Point N.A.S." (1983) TV Series .... Lt. Simon Adams
"Seven Brides for Seven Brothers" (1982) TV Series .... Adam McFadden (1982-1983)
Young Doctors in Love (1982) (uncredited) .... Drug Dealer
"General Hospital" (1963) TV Series .... Dr. Jeff Webber (1976-1981)

Producer
From Stargate to Atlantis: Sci Fi Lowdown (2004) (TV) (executive producer)
Firehouse (1997) (TV) (executive producer)
"Stargate SG-1" (1997) TV Series (executive producer)
MacGyver: Trail to Doomsday (1994) (TV) (executive producer)
MacGyver: Lost Treasure of Atlantis (1994) (TV) (executive producer)

Himself
From Stargate to Atlantis: Sci Fi Lowdown (2004) (TV) .... Himself/Jack O'Neill
Preview to Atlantis (2004) (TV) (uncredited) .... Himself/Jack O'Neill
1st Annual Spaceys (2003) (TV) .... Himself
Celebrity Profile: Henry Winkler (1999) (TV) .... Himself
Battle of the Network Stars XVI (1984) (TV) .... Himself (CBS Team contestant)
"The Late Late Show with Craig Kilborn" playing "Himself" 23 June 2004
"National Geographic Explorer" playing "Himself" in episode: "North America's Last True Wilderness" 15 October 2000
"The Martin Short Show" playing "Himself" 27 March 2000
"Donny & Marie" playing "Himself" 7 March 2000
"Late Night with Conan O'Brien" playing "Himself" 12 November 1998
"Newton's Apple" playing "Himself" 23 November 1997
"Late Night with Conan O'Brien" playing "Himself" 8 November 1996
"The Arsenio Hall Show" playing "Himself" 15 January 1992
"The Arsenio Hall Show" playing "Himself" 12 September 1991
"The Joan Rivers Show" playing "Himself" 5 March 1991
"The Joan Rivers Show" playing "Himself" 7 December 1990
"The Arsenio Hall Show" playing "Himself" 14 September 1990

TV Guest Appearances
"Stargate: Atlantis" playing "General Jack O'Neill USAF" in episode: "Rising: Part 1" (episode # 1.1) 16 July 2004
"The Love Boat" playing "Carter Randall" in episode: "Isaac Gets Physical/She Brought Her Mother Along/Cold Feet" (episode # 5.24) 20 March 1982
"Today's F.B.I." playing "Andy McFey" in episode: "The Fugitive" 29 November 1981
"The Facts of Life" playing "Brian Parker" in episode: "Brian and Sylvia" (episode # 2.16) 25 March 1981