what series would you consder a must-have? obviously, there's Tolkein's books and the Harry Potter series, duh, but what else do you have that you just can't put down? I've been enjoying all of Robin Hobb's books, from the Assassin - Live Ship - Tawny Man collection to her new Soldier Son trilogy (waiting to get my hands on the last in that series). Also I've enjoyed Lynn Flewelling's Tamir trilogy, again waiting to get my hands on the last one, too bad her Luck In the Shadows doesn't hold the intensity of the other trilogy. i've got my hands on a bunch of other books, picked at random from the fantasy section at borders, but i'm open to further suggestions i've been going through a lot lately.