I haven't read the book either, but I have seen the film and I can sum up it as just a movie they decided to do with several attractive high profile actors with bad hair extensions and even worse accents. I had trouble paying attention to the plot because it was kinda boring.

There are unfortunately very few vampires movie that are actually worth seeing imo. I can think of only four that were decent: 30 Days of Night, From Dusk Til Dawn, Nosferatu, and Let the Right One in. The last one I haven't seen all of it yet, but it looks pretty good! Anywayz, the director of 30 Days of Night is doing the third Twilight movie so I have hope that that will actually not be utter crap.