I know I'm going to be one of the worst culprits of this, but what book(s) make you keep dipping back into that well? I've read the Stand four times I think. I can't even count the number of times I have read the Dragonlance Chronicles. The first six Drizzt books have three reads on them. I've read all the Honor Harrington books at least twice. Most three times. Multiple reads on most of the Ring of Fire/1632 books. I know there must be more.