I heard one reviewer say that 'if you are teenager you'll love this movie, if you aren't, then you won't.' I completely disagree. I love this movie and I'm old enough to have a teenager.
If you are a fan of the Twilight series or the first Twilight movie, then you'll enjoy this movie.
The special effects are much better than the first movie, the story follows the book closely and the characters stay true to the book.
Two big changes from the first movie is that the Cullens' eyes seem more golden in New Moon than before and of course, there's much less Edward. The overall look of the movie is much more colorful than the first.
It was great to have Jacob's character developed. I can't wait for Eclipse.