Michael Rennie: Michael Rennie. Actor: The Day the Earth Stood Still. The British actor Michael Rennie worked as a car salesman and factory manager before he turned to acting. A meeting with a Gaumont-British Studios casting director led to Rennie's first acting job - that of stand-in for Robert Young in Secret Agent (1936) directed by Alfred Hitchcock. He put his film career on hold for a few years to get some...