Richard dean Anderson - Richard dean Anderson as Major General Jack O'Neill on Stargate. 1. Stargate: Continuum (2008) (V) (post-production) .... Major General Jack O'Neill 2. 'Stargate SG-1' .... Colonel Jack O'Neill / ... (175 episodes, 1997-2007) 3. 'Stargate: Atlantis' .... Major General Jack O'Neill / ... (4 episodes, 2004-2006)