"Imaginative and thought provoking + good fun"
This is a great sci-fi fantasy piece by a guy who must have done a LOT of drugs... It seems to have worked for him though... This one specifically I first read in jr high, and recently hunted it down again to reread.
It is set in the FAR future, and is working under the prenise that the universe is collapsing back in on itself. Society on Earth is in one of the tribal cycles. A small group of adventurers, who hadnt intended to at first, set off on a quest to try and save humanity (and a few other species as well) from the impending doom of not only the entire planet, but the entire universe.
I may have had a soft spot for this title coming into it, but I think anyone who enjoys a good post apocolyptic romp would enjoy Dark is the Sun.