I still haven't read the book. My wife has a copy of it somewhere. But yeah, the movie is pretty legit. I remember when I was a lad, my sister watched it all the time, and for some reason, I hated it, and got sick of it being on all the time. When I got a little older, I sat and watched it one night, and it was like I saw it for the first time. An amazing story, terrific animation, and the voice cast is great.
I can't wait for Peter Jackson to remake it as a five part live action film, with CGI Christopher Lee as Hagard.