So, apparently, Loki is going to be the villain in this one. He follows the sensitive ideology of "If everyone is too busy worshipping me, then they won't have any time do to wars and carp" It's disappointing for me, because I think Loki was the weakest part of the Thor movie. He wasn't awful or anything, just...nothing special. I guess we were kinda spoiled with Heath Ledger's Joker, in terms of comic book movie villain, and maybe he'll be better and more intimidating than he was in Thor, since he apparently saw some stuff when he went through that wormhole at the end of the movie.
This also seems odd because the trailer featured cars flying around and wide-spread mass destruction, something Loki never really seemed able to do, even with Odin's spear. Did he gain some power, through the wormhole? Does he have an army, now? Why would we need like seven heroes when Thor seemed pretty able to deal with him on his own?