If you haven't read/seen The Perks of Being a Wallflower, go do it NOW, NOW, NOW!
Seriously though, I loved the book when I first read it years ago, and I was really happy with the movie adaptation as well. The movie really captured the fragile and emotional moments of such an endearing story. There's almost always the feeling that a movie won't be as good as the original book, but I think they did a great job with this one. I look forward to re-watching this as much as I've re-read my worn out copy of the book :o)