Book - It's a tie. Watership Down (OBVIOUSLY) and Cracked Up To Be, a contemporary ya novel. I've read that book more than twenty times because I just love it so much.
P.S. If anyone likes zombies and beautiful books overall, I reccommend The Reapers Are The Angels by Alden Bell. Finished it today, it was such a horrifyingly beautiful little story, and the zombies aren't even the focus.
What are your favorites?