well i definitely think that reading the book gives you a better sense of the story, but the movie really doesn't require it. it shows the sort of awkward chemistry between edward and bella. robert pattinson does a great job in this movie. he really took the character to the next level. the book talks about how hard it is for him to act normal. when he walks, talks, or tries to be intimate, you can really see it. i do think there were some important details left out of the movie, but if you havent read the book it shouldnt bother you. i think this is probably my favorite movie. that could be because of robert and the sensual vibe he gives off, but really, i like almost everything about the movie. i do think it's worth it. just try it.