I LOVED it!! The actors were incredible and they played their roles incredibly well. A lot of people say that it was too rushed and too much was changed from the book, but I think that it was the best interpretation of a book on the big screen I've seen to this day. The places and events were altered a little but it all fit really well into the whole thing. I think it doesn't matter if you read the books or not, it's a FANTASTIC movie!
It does also help that Edward Cullen is undeniably and totally sexy! I love him. :D