Eliza Dushku in a never-aired ''Dollhouse'' episode and More First Looks

In a futuristic world where real life has become an actual version of The Sims, Bruce Willis and Radha Mitchell play FBI agents whose robotic doppelgängers are investigating a rare human murder. But playing a machine in Surrogates, out Sept. 25, proved a bit trickier for Mitchell than she expected. ''They rarely blink,'' she says. ''We were given a list of robot behavior before we started shooting, but [director] Jonathan Mostow was always reminding me not to walk around with my mouth open.'' —Jeff Labrecque

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