Real Steel" imagines a near future when human boxers have been replaced by robots. Well, why not? Matches between small fighting robot machines are popular enough to be on television, but in "Real Steel," these robots are towering, computer-controlled machines with nimble footwork and instinctive balance. (In the real world, 'bots can be rendered helpless on their backs, like turtles.) It also must be said that in color and design, the robots of "Real Steel" are glamorous and futuristic-retro enough to pose for the cover of Thrilling Wonder Stories.