Watch in 1080p:
1:53 Hulk catching a falling Iron Man and scraping against a building
2:15 Non-CG shot of Thor and Cap looking up
2:19 Monster chasing Iron Man around corner of building
I think it's the best trailer yet, and I couldn't be more excited to see this one when it comes out on May 4. There is also a gallery of hi-res stills from the trailer here.