Iron Man 2 (Jon Favreau, 2010)
I was kinda pleasantly surprised by this. There are some major flaws in it for sure and the story requires some serious suspension of disbelief, but it's a really fun ride. I enjoyed just about everyone in it, Downey is always fun, but I was surprised with how much I liked everyone else. Except Cheadle, I don't know if it was him or the writing for his character, but he felt really forced.
The story is a bit predictable in hitting all of the notes that you expect from a comic book movie, and it's a little over-stuffed, but despite the frequent level of ridiculousness I was pretty with it.