The Lord Of The Rings movies weren't as good as the books (obviously) however they were still fantastic, I thought.
The Hobbit movies were nowhere near as good as the book, but were okay.
Now, The Silmarillion. Should Mr. Jackson make that in to a film? Or TV show?
I think not. The book is to intense for either, he could NOT do it justice. Nobody could.
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there isn't really a way to turn a massive history lesson like the silmarillion(thousands of years time) into one cohesive narrative and formatted to 90 minutes and remain a profitable venture. Not many people outside Tolkien fans/nerds are going to know it, it doesn't have the massive brand recognition. people don't have that attention span. it would have to be mutilated to be a movie. maybe a 100 season long TV series like doctor who except less retarded?