So I skipped class today and went to see the movie with my roommate.
Overall, it was pretty awesome, though be warned that it is not just very violent but painfully violent, as in cringe-worthy moments.
However, I do now question whether Snyder was a good choice for director. The things that bothered me most were his stupid inappropriate slow-motion instants occurring often at inappropriate times, action sequences that dragged out far beyond what their importance to the story merited, music choices that didn't contribute to the effect of the movie in some cases, and a few instances of excessive violence. All those are on Snyder.
I think the movie is totally worth seeing, but my roommate said that if one hasn't read the comic, it's hard to follow. I had and really enjoyed it, but I could see where it could be confusing.
Also, this, which contains spoilers
I didn't mind the somewhat altered ending. It was kind of forced upon the production crew, since there was no feasible way to include Tales of the Black Freighter. However, the ending was made to be somewhat more judgmental of Veidt, which takes away from the moral ambiguity a little. Rorschach's ending especially is still really powerful though.
Also, I didn't like the change made to Rorschach's flashback where he kills his first criminal. In the comic, he didn't just hack away at the guy, but rather cuffed his arm to some fixed object, gave the man a saw, and lit the house on fire. He basically said "Start sawing, and you won't make it through the metal in time," implying the man either needed to hack his arm off or die in the fire. I thought this better captured the pent up rage and cruelty that Rorschach meant to unleash on the criminal.