You gotta love a middle-aged wreck as a superhero. Iron Man may not make the A-list of Marvel Comics' stable -- home to Spider-Man, X-Men and the Hulk -- but he may be the cinema superhero for the rest of us. No spider bite or genetic mutation produces him. Rather he springs from good old American ingenuity, the brainchild of his creator and impersonator, Tony Stark, a character modeled in part on genius-playboy Howard Hughes. Tony wears his character flaws like badges of honor yet Iron Man represents a midlife correction.