David Hewlett is an English-born Canadian and American actor, writer, director and voice actor best known for his iconic role as the astrophysicist Dr. Meredith Rodney McKay in the science fiction television franchise Stargate (including Stargate SG-1, Stargate Atlantis, and Stargate Universe). He has also built a prolific career in psychological thrillers, horror films and major studio features.

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