If you have any interest in Fantasy, the "Wheel of Time" series by Robert Jordan is amazing. It's a 14 book series, I just finished reading it the second time.
Another set that is very good is "The Sword of Truth" series by Terry Goodkind. He's a scientologist, and occasionally some of the philosophy shines through, but it's rare enough that I never got irritated by it.
Of course, there's always the Harry Potter series, actually all very good reads.