Books That'd Make Spectacular Animated Films
1. The Lunar Chronicles
2. Harry Potter
Books That Made Lovely Animated Movies
1. How To Train Your Dragon
Also that animation is so gorgeous, and did I mention the soundtrack? *swoons* Plus the plots. Both How To Train Your Dragon movies took huge risks in (view spoiler)[having the hero Hiccup not leave the final battle unscathed, and *sobs* killing the father, Stoick.] Both risks I think made the story that much better.
2. The Princess & the Frog
Also this was Disney's last hand-drawn film and while I adore CGI animation I still love hand-drawn. Hand-drawn just has a certain loveliness and magical-ness to it.