My favorite book is Cat's Cradle by Kurt Vonnegut. Vonnegut's biting sarcasm and witticism makes it funny as hell, but consecutive readings (I've read it three times, as of yet, and eyeing a fourth) can make it charming, depressing, or even scary. Religion is lambasted, sure, but it's also discussed fairly in a way that can make all sides of the spiritual spectrum appreciate and ruminate over what is said. The brief vignette chapters and recurring motifs remind me of a Burroughs book, or lately, a Palahniuk book. I picked it for my University English research paper, and I'm really, really excited! Best part? Damn, way too many. One that sticks out in the mind is Dr. Felix Hoenikker's response to the witnessing of the testing of an atom bomb...
Haven't read The Hunchback of Notre Dame, but The Road is superb. Makes me wanna read the rest of McCarthy's work!