Avengers

OK, they can quit making super-action superhero movies for a while.  This one's so big, so action packed, so funny, so skirts-over-the-top that there's no way to follow this act.  Anything in a similar vein would be a letdown.
Sure, I'm looking forward to The Dark Knight Rises (or whatever the new Batman movie's called), and a little curious about the Spider-Man reboot, but for general superhero movies studios can just quit for a while.  Avengers is that good.
See it in 3D.