Don S. Davis
Donald Sinclair "Don" Davis (August 4, 1942 – June 29, 2008) was an American character actor best known for playing General 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). He was also a theater professor, painter, and United States Army captain.