I have now seen most of the summer superhero movies. From good to worst, I would rank them:
X-Men: First Class (good)
Thor (okay, leaning toward bad)
Captain American (bad, boring)
Green Lantern (really, really bad)
I never want to see another movie about the origin of a superhero, his backstory, and so on. If you can't make a movie that is just about a superhero's continuing adventures, maybe the character is shit to begin with.