Feb 072016
David Nykl
David played Radek Zelenka on Stargate Atlantis and appeared once on SG1 in the episode The Pegasus Project. He has also appeared on Arrow, Seven Days, Cold Squad, Psych, Sanctuary and recently Supernatural. IMDB Twitter
James Spader
James was the original Daniel Jackson in the theatrical Stargate movie. He made his name in features but has had huge success on television with The Practice, Boston Legal and now the hit show The Blacklist. IMDB
Frank Cassini
Frank played Colonel Sean Grieves in the Stargate SG1 episode The Sentinel and has also appeared on Wolf Lake, Dead Like Me, The Bridge, Blackstone and Supernatural. IMDB Twitter