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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The Silmarillion wouldn't make sense as a movie. It's literally a history book. That's what was so amazing about Tolkien; he didn't just write a story, he created a whole universe with its own languages and history... and he wrote out that history. The Silmarillion is a tough book to get through because it reads like a history book. Making a movie out of The Silmarillion would be like making a movie out of your high school history text.