- Has played the first character to go through the Stargate, Dr. Ernest Littlefield, in the Stargate SG-1 (1997) Season One episode "The Torment of Tantalus".
- Promoted from recurring guest star to series regular on Stargate: Atlantis (2004). (December 2004)
- Has appeared with Amanda Tapping on three different series: Stargate SG-1 (1997), Stargate: Atlantis (2004) and Sanctuary (2008).
- Born in Paisley, Scotland. Raised in Canada.
- Has made guest appearances on all three of the longest running North American science fiction series: The X-Files (1993), Stargate SG-1 (1997) and Smallville (2001).
- His wife, Courtney, gave birth to their first child, a son, Hugh McGillion on August 5, 2012.
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