Don S. Davis

Donald Sinclair Davis (August 4, 1942 – June 29, 2008) was an American actor best known for playing General George Hammond in the television series Stargate SG-1 (1997–2007), and earlier for playing Major Garland Briggs on the television series Twin Peaks (1990–1991) and Captain William Scully in The X-Files. In animation, he was also known as Wild Bill in the 2003 direct-to-video animated movie G.I. Joe: Spy Troops and its 2004 sequel, G.I. Joe: Valor vs. Venom. He was also a theater professor, painter, and United States Army captain.