
Acting
Donald Sinclair Davis (August 4, 1942 – June 29, 2008) was an American actor, artist, and former military officer. He began his career as a theater professor before transitioning to acting. He became known for his role as General George Hammond in Stargate SG-1 (1997–2007) and Major Garland Briggs in Twin Peaks (1990–1991). Davis appeared in numerous films, including A League of Their Own (1992), The Fan (1996), The 6th Day (2000), and Far Cry (2008). He often portrayed authority figures and military characters, reinforced by his real-life experience as a U.S. Army captain. In addition to acting, he was a talented painter and sculptor. He studied theater and art at Southwest Missouri State College and later earned a Ph.D. in Theater Arts from Southern Illinois University. Davis was married to Ruby Fleming-Davis and remained an influential presence in film and television until his passing.

NCIS
2003

Supernatural
2005

The X-Files
1993

Stargate SG-1
1997

Columbo
1971

The West Wing
1999

MacGyver
1985

Psych
2006

Knots Landing
1979

Twin Peaks
1990

Stargate Atlantis
2004

L.A. Law
1986

21 Jump Street
1987

Highlander: The Series
1992

Andromeda
2000

The Outer Limits
1995

The Dead Zone
2002

Northern Exposure
1990

The Sentinel
1996

Viper
1994

The Twilight Zone
2002

Wiseguy
1987

Heritage Minutes
1991

Honey, I Shrunk the Kids: The TV Show
1997

Con Air
1997

Screen One
1989

Booker
1989

Hook
1991

Midnight Matinee
1989

Poltergeist: The Legacy
1996

The 6th Day
2000

Flash Gordon
2007

The Wonderful World of Disney
1954

The Chris Isaak Show
2001

Bordertown
1989

Cliffhanger
1993