The reviews weren't to good for this one, but I actually thought it was pretty good. As I mentioned before, they made it a trillogy pretty much just to make more money and I am sure that was the studio more than Jackson. The EEs were ineveitable, which is why I didn't purchase the original BD release, I rented it.
ALL of the movies have elements from the Silmarillion and the rest of the "archives", The History of Middle Earth (12 books).