Interesting topic.
Me I still haven't seen X-men first class, waiting for DVD or netflix release as I really don't particularly enjoy going to see movies in theatres. I've liked at least 2/4 previous x-men movies, and tollerated the other 2, but hope this one is as good or better than II (my favourite).
As for other movies...
Transformers: I am really not that excited here... sorry to be a bit of a damper but I rather despised the last two. I mean I liked the action scenes the the bits actually dealing with the transformers themselves and their war was really quite cool. I could have even tollerated the blatant army promoting bits if that was all that was in there. But no... A spectacularly bad actor (Labouf... or however you spell that waste of a human body's name) and his marry band of the most annoying and pointless people on this earth had to hog about 70+ percent of the screen time.
Green Lantern: I won't pretend to be an expert on this particular comic franchise but I know my share as a dedicated comic hero geek. I'm not that excited here either really as they chose to go with the Hal Jordan character over that of the old justice league series (at least that's what it looks like) and just about every interpretation of him has him as, pardon my French but a whiney *****. I mean damn man, a ring of untold power litterally falls out of the sky onto your ass and all you can do is complain that you, the intergalactic equivilant of a caveman are not treated with equal esteem to others?
One movie I am truly excited for is the Avengers movie, I mean Marvel is trying something noone has ever done before, lining up about 4 movies to all fall into place to let this one work in context. Thus far most if not all the characters shown have worked out pretty well, if nothing else they got the perfect Tony Stark.