Acting

2023

1 episode

2011		Raising Hope 1 episode as Keith
2011		Fairly Legal 4 episodes as David Smith

2009		Stargate Universe 6 episodes as Jack O'Neill
2009		Stargate Atlantis: Fans' Choice as Jack O'Neill
2009		Stargate SG-1: Children of the Gods as Colonel Jack O'Neill
2009		Saturday Night Live 1 episode as Self - Cameo (uncredited)
2009		Stargate - En route vers les étoiles as O'Neil - Lui même

2008

as Major General Jack O'Neill

2006

1 episode as Richard Dean Anderson (voice)

2004

5 episodes as Jack O'Neill

1997		Stargate SG-1 178 episodes as Jack O'Neill
1997		FireHouse as Lt. Michael Brooks

1996

2 episodes as James Holland

1995		Past the Bleachers as Bill Parish
1995		Legend 13 episodes as Ernest Pratt / Nicodemus Legend

1994		MacGyver: Trail to Doomsday as Angus MacGyver
1994		Beyond Betrayal as Bradley
1994		MacGyver: Lost Treasure of Atlantis as MacGyver

1992		Through the Eyes of a Killer as Ray Bellano
1992		In the Eyes of a Stranger as Jack Rourke
1992		The Tonight Show Starring Johnny Carson 1 episode as Self

1988		Golden Globe Awards 2 episodes as Self - Presenter
1988		The World's Greatest Stunts: A Tribute to Hollywood Stuntmen as Self (archive footage)

1987

1 episode as Self

1986		Ordinary Heroes as Tony Kaiser
1986		Odd Jobs as Spud

1985

139 episodes as Angus MacGyver

1984

1 episode

1983

22 episodes as Navy Lt. Simon Adams

1982		Seven Brides for Seven Brothers 22 episodes as Adam McFadden
1982		Young Doctors in Love as Drug dealer
1982		The Love Boat 1 episode as Carter Randall

1981

1 episode