LOL as a fan of the books I can't tell you how wrong this is, ESPECIALLY the Two Towers. I read the books shortly before seeing the movies and there is a ton of stuff missing. Entire characters written out or portrayed poorly.
Doesn't bother me though. I know a book is not a movie.
To capture the depth of those books as thoroughly as the fanboys wanted it, it would take so much film that you could probably wrap every inch of the New Zealand coastline with it. Each movie would be 5 hours and have three intermissions. A director's cut on DVD would be 10 discs. The costs would be U.S. military-like.
But the production team was tasked with capturing the essence of those books in a playing time that would not lose the masses (i.e. somewhere short of 3 hours). I think they did an outstanding job riding the line, and actually reintroduced the books to popular culture. I had so many friends reading the books for the first time, it was almost irritating. It was like being back in 8th grade AP English all over again. Everyone was a LOTR geek!
I thought the movie did an excellent job of driving home Tolkien's primary point: men aren't inherently corruptible, they are already corrupt, and wise men run from temptation rather than believing they are bullet proof.
If anyone is every curious how deep Tolkien ran, his sheer theological depth is best captured in
this book.