What is your favourite book?

I have enjoyed so many books during my lifetime that this is very difficult to answer. One of my favorite authors is Gregory MaQuire. He wrote, WICKED, and SON OF A WITCH as well as others I enjoyed. I think however, I would have to pick a classic, Northanger Abbey, by Jane Austen as something I would read over and over again. Great Topic. I can't wait to see what others write.