The ticklish fun of Iron Man comes from watching a happy cast in fighting trim make a concept that should sink like a lead dirigible do cartwheels on the ground and barrel-rolls in the sky.
Robert Downey Jr. plays Tony Stark, a munitions tycoon who learns the dangers of arms proliferation first-hand when he's kidnapped in Afghanistan and sees that his weapons are best-sellers in enemy territory. His insurgent captors order him to create a copy of his devastating Jericho missile system. He instead uses their stash of Stark Industries materiel to design a new-millennial armor that will allow him to fight and fly his way out of the bad guys' caves.
IRON MAN (Paramount) Starring Robert Downey Jr., Gwyneth Paltrow, Terrence Howard, Jeff Bridges. Directed by Jon Favreau. Rated PG-13 for some intense sequences of sci-fi action and violence, and brief suggestive content. Time 120 minutes.