Just saw the movie. I was never a big fan of Thor or Loki (I've threaded about this before) but this time around the movie's pretty good. Not revolutionary by any means but good old superhero fun well awaaaaaaay from the 9/11 terrorist plot, fucking finally. The movie's considerably heavier on fantasy and science fiction than the first, which I think is pretty healthy. Prologue scene is disturbingly similar to Fellowship of the Ring's though. And Asgard looks a little bit too much like Naboo, especially when it's under attack, Lucasfilm takes care of the sound effects and Natalie "Padme" Portman is running around in princess garb.
Stick around for two post-credits scenes this time.