"When I made Terminator 3, I learned something about directing actors to behave like robots. And one of the key things I learned is that if an actor tries to play a robot, he or she risks playing it mechanically in a way that makes the performance uninteresting. So how I approached the issue in that film and in Surrogates was instead to focus on erasing human idiosyncrasies and asymmetries—in posture, facial expressions, gait, etc. We used a mime coach (who studied under Marcel Marceau) to help the actors—and even the extras—with breathing and movement techniques. The actors really enjoyed the challenge."

"How do you save humanity when the only thing that's real is you?"

"Human perfection. What could go wrong?"

"Bruce Willis - Tom Greer"

"Radha Mitchell - Jennifer Peters"

"Rosamund Pike - Maggie Greer"

"Jack Noseworthy - Miles Strickland"

"James Cromwell - Dr. Lionel Canter"

"Ving Rhames - The Prophet"

"Boris Kodjoe - Andrew Stone"

"James Francis Ginty - Canter Surrogate"

"Tim Donovan - Surrogate Tom Greer"

"Michael Cudlitz - Colonel Brendon"

"Devin Ratray - Bobby Saunders"

"Helena Mattsson - JJ"

"Shane Dzicek - Jarod Canter"