Northanger Abbey by Jane Austen-Austen makes fun of novels and the effects they have on people. Wickedly, wickedly funny.
Rock Stars on God by Doug Van Pelt-Because it would be amazing to ask bands like Green Day, Kiss, Metallica, Bad Religion, and Nickelback "So, what do you think about Jesus Christ?" Van Pelt did just that...and the results are quite amazing.
Sanctuary by William Faulkner-Because it's William Faulkner
Mere Christianity, Till We Have Faces, and The Four Loves by C. S. Lewis-Because C. S. Lewis' intelligence and relevancy never cease to amaze and inspire me.
Dear Brutus by J. M. Barrie-Because I found a copy of it from the 1800's in a used bookstore, and it had such a pretty cover.