Favorite Book

I was just at one of my resale ships the other day and I love going through the books in resale shops. It made me think though. How many GREAT books are out there that I don't even know exist. What's your favorite book? Tell me why? I am big on picking books up where the cover catches my eye. Any book that has a book like cover on it, I'm a sucker for. For instance, the 13th Tale, Shadow Of the Wind. They both have dust jackets that are a book cover. I don't know why I always fall for those books or is it that they just catch my fancy. Please tell me what you favorite book is!