David Hewlett

David Ian Hewlett (born 18 April 1968) is an English-Canadian actor, writer and director, known for his role as Dr. Rodney McKay in the ''Stargate'' science-fiction franchise. He first gained fame for his roles as Grant Jansky in the Canadian TV series ''Traders'' (1996–2000) and as David Worth in the Canadian psychological horror film ''Cube'' (1997). He appeared in the horror film ''Pin'' (1988) and the science-fiction films ''Scanners II: The New Order'' (1991) and ''Rise of the Planet of the Apes'' (2011). Provided by Wikipedia