Like I mentioned, I watched this movie the other night. I enjoyed it, for the most part. Wish I had seen these in the theater, back when there was one almost across the street. Look for a full review in the near future.
In watching these trailers, I've decided that sometimes having 40+ years of comic book knowledge stored up in my head isn't always the best thing. I mean, I knew who the villain was in the first Iron Man movie, and I think pretty much everyone could figure out who the "Winter Soldier" would be. I'm also pretty sure I know how Ultron will be defeated.