Velvet Elvis (by Rob Bell) - a book about faith and what it looks like, and the fact that it includes questioning. I really like Rob Bell and the thoughts he has. He's the guy behind this, and that's where I first heard about him.
I haven't read a whole lot of this book yet, but I can tell that I already like it. Here's a quote for you. Enjoy.
Questions, no matter how shocking or blasphemous or arrogant or ignorant or raw, are rooted in humility. A humility that understands that I am not God. And there is more to know.
Questions bring freedom. Freedom that I don't have to be God and I don't have to pretend that I have it all figured out. I can let God be God.
-Rob Bell