I'm not a huge fan of listening to books because I enjoy interacting with the text on paper. However, this is a book every believer ought to interact with on some level, and it's a free download all month at Christian Audio.com - It's called Crazy Love by Francis Chan. I'm half-way through it so I'll let you know how the other half goes. The first half is very convicting. I'm looking forward to getting into more application points.
If you check it out (or have already come in contact with this book), let me know what you think of it.