By Owen Gleiberman
Updated July 30, 2004 at 04:00 AM EDT

I, ROBOT PG-13, 115 mins. Del Spooner (Will Smith), a detective in 2035, suspects a robot of murder. As the voice of Sonny the polysynthetic droid, Alan Tudyk sounds like the love child of ”2001”’s HAL and Julie Andrews. He’s (mildly) charming, but the movie lacks imaginative excitement.