Well?
EDIT: OK FORGET ABOUT FOLLOWING THE BOOKS. THINK ABOUT THE FILMS THEMSELVES.
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LOTR: Considering The Hobbit was only one book. Tho the movie sucked compared to the book. Like 1/3 of that stuff never happened in The Hobbit book. And some of those characters aren't even in the book!! Which really suprised me because I thought LOTRs was a really good book to movie series. Thw problem is they had to stretch one medium sized book to 3 movies worth. And hell the last one is literally one or two chapters in the book.