||Iron Man 2 is a polished, high-octane sequel, not as good as the original but building once again on a quirky performance by Robert Downey Jr. The superhero genre doesn't necessarily require good acting, but when it's there (as in Iron Man and The Dark Knight), that takes it up a level. Downey here gives us a Tony Stark who is cockier and more egotistical than ever. Or, and here's the key, he seems to be...All heroes have a fatal flaw. That's one of the rules of the road in fiction. Tony Stark's flaw is that he is dying. The megalomaniac act comes naturally, but now it's useful as a cover-up. His chest-mounted battery pack, or life source, or whatever it is, is running low and poisoning his blood. It works by using the rarest element in the periodic table, and to renew it would require discovering or inventing a new element. Not easy...Mickey Rourke gives us all the Ivan Vanko we could possibly wish for, unless he had a third arm to provide space for more tattoos. His performance features flashing his gold teeth in mirthless laughter, and lots of growling. Sam Rockwell gives a wry comic performance as Hammer, a querulous whiner who seems in over his head in the super weapons business...You want a sequel, you got a sequel. Iron Man 2, directed like the first one by Jon Favreau, gets the job done. Since both movies have essentially the same story arc, there aren't a lot of surprises, however, which started me to wondering how the guys survive inside those suits. Sure, the suits are armored, but their bodies aren't. How many dizzying falls and brutal blows and sneaky explosions can you survive without breaking every bone in your body? Just asking'. At the end of a long day, those suits should be filled with bloody pulp.