- Attended high school with director Vincenzo Natali and starred in a few of Natali's movies, including the cult hit Cube.
- Founded Darkyl New Media, a Web site design business, with his sister Moyra.
- His Dr. Rodney McKay character has appeared on Stargate SG-1, Stargate Atlantis and Stargate Universe.
- Wrote, directed and starred in the independent film A Dog's Breakfast.
- Sebastian Flynn Loughman Hewlett — Son
- Jane Loughman — Wife
- Kate Hewlett — Sister
- Moyra Hewlett — Sister
- Soo Garay — Ex-wife
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