This was easily my favorite book of the series, mind you I just started the last book today, but I didn’t feel let down by the movie version. There was a lot of material in the book, so I knew some things were going to be left out of the movie. Overall, I thought they did an excellent job compressing the main story. I thought the script was spot on. And the direction quite effective. As far as special effects, it was perhaps the best of the series to date.
I usually judge how good a movie is based on whether or not I want to watch it again, and this one I could easily watch over and over again. Definitely worth seeing.