I completely agree about Fantastic 4. The first one was utter crap.
Spiderman 3 though, I have to say I liked it. It had that comic book feel and it seemed like they just had fun with it. They tried cramming in a lot because, supposedly, it’s the last movie 
Transformers and the next Harry Potter movies are the only other ones I’m looking forward to seeing this summer, unless there are some I’m forgetting.