Colin Cunningham is an American actor. He started acting in the mid-1990s with his first acting gig on the TV movie For the Love of Nancy. He later made guest roles on such shows as The X-Files. In 1995, he had his first film role in Hard Evidence. In the 2000s, he had performances in the films The Silencer, The 6th Day, and Stealing Sinatra. Meanwhile, on television, he starred as Herb Kolodny on the Showtime series Beggars and Choosers. He next played Major Paul Davis on Stargate SG-1. He became further known for his role as Det. Brian Curtis on Da Vinci’s Inquest. In the 2010s, he gained recognition for starring as John Pope on Falling Skies.