For any fans of the fantasy genre, a must-read is The Silmarillion by J.R.R. Tolkien. I also highly recommend the 12 (yes, as in a dozen books) Appendix volumes narrated by Christopher Tolkien which further outline the entire history of the story.
You want action? Temple by Matthew Reilly. (Army elite forces, Secret Service, Nazi terrorists, ancient Incan spirit Gods, nuclear holocaust, etc. I had never before seen a book with so many twists.)