It came out in Greece this Thursday (ffs local distributors). I've already read the books (after seeing the first trailer I bought them all) played the video game (not that it matters when talking about the movie) and went to see it yesterday.
I
loved it. First of all the casting was ACE. Specially Wallace and Kim, my favorite characters from the comic, were spot on. I agreed with some of the changes they made, but honestly the Knives thing wasn't handed well (with the exception of the jumping out of a window scene hahahahahaha). And really at the ending I was like WTF Scott is going to date Knives????????
Also why didn't Scott and Ramona finish Gideon alone with their swords?
The scene with Knives fighting Ramona was supposed to happen waaaaaaay earlier, and it just didn't make sense when they put it in the end. (and a smaller nitpick, didn't Knives get red highlights instead of blue?)
I actually liked that they didn't have the 7 ex girlfriends pods in the movie (that was way WTF even for the comic).
But it ain't a movie for everyone. The theater had like 20 people, and a couple sitting next to me got up and left after the first evil ex boyfriend. But the rest who stayed loved the movie, judging by their laughter. Even so, I was the one laughing the most in the theater

.
Loved it, going to buy the blue-ray when it gets released.
Also I LOVED the soundtrack of the movie.
http://www.youtube.com/watch?v=9aNurG5JjaA