This is how mainstream movies should be: whip-smart, with matinee idols steering a crackling plot that both requires your intelligence and urges you to sit back and be overwhelmed. It's an ideal sensation, to be entertained and mentally stimulated. The Prestige --named for the final part of a magic trick -- does both, thanks to Chris Nolan (hasn't made a bad picture yet) and Hugh Jackman and Christian Bale (two actors whose personalities are night and day but whose charisma level is off the charts). They keep us entranced and distracted with the fireworks of their duel, but all the while they're setting up a great trick on the medium of film itself. When The Prestige reveals its prestige, we are duly awed.