Captain America is quickly shaping up as the must-see movie of the summer. Now an extended trailer, clocking in at two-and-a-half minutes, has dropped, adding to the buzz of this Marvel Comics superhero flick. The trailer helps set up the back story of Steve Rogers, the man than becomes Captain America. Chris Evan appears as the super skinny Rogers (aided by some awesome CGI) and emerges as the super buff super hero. This movie is going to be awesome.