Saw it...TWICE!
I knew nothing of the comic book history or story, and to be honest, when I saw the preview the first time, I thought it looked a bit silly. After seeing it the first time, I was so enveloped in what Marvel does best, and that is encompassing you in their universe. Everything about this movie felt like a Marvel world, and a team of Marvel characters, and because of that I absolutely LOVED it.
My wife had ZERO interest in seeing it, but after watching it the first time I convinced her to go watch it in IMAX, and she ended up loving it as well! This coming from a woman who scoffed at the idea of seeing it after seeing the previews.
I think it's been one of the best movies of the summer personally...and I cannot wait for another one!