The summer of the comic book film is split between success and mild disappointment, and, so fanboys hope, Captain America is dashing in to save the day. While both "Thor" and "Green Lantern" opened number one at the box office, the headlines were very different for the first two page-to-film extravaganzas: Chris Hemsworth and Natalie Portman helped Marvel's Norse God film to a surprising $65 million opener and strong subsequent performances, while Ryan Reynolds' CGI-happy DC adaptation sunk below...