Here are some of the books I just finished up.

Presentation Zen: this is the the best book I have ever read in terms of Design for presentations and how to present. I wish every speaking Pastor would read this book and put it into practice. Great stuff. A good combo book to read with Made To Stick.
Pagan Christianity:  Barna's new book on how current Christian traditions developed. Pretty fascinating. I'm doing some more study on this. If you want your head bent on why we do what we do as Christians its worth the read.
No More Christian Nice Guy: My wife bought this book and left it on the table as subtle hint. Good book. I have a lot of stuff to work on.Surely the most butt kicking one of the bunch.
Currently I am reading the year of living biblically by AJ Jacobs. Its very good.