I read a lot of books, and I honestly like most the books I read, but this one, Unchristian by David Kinnaman is wonderfully insightful. It's been especially helpful for me as a pastor and even as a Christian!
I just started the book a week ago and would say that every pastor should most definately read it, like I would even say it should be required reading for pastors & for all church leaders. All the staff here at OLF are reading it!
In short, Unchristian is all about the perceptions people who are not Christians, and even those who are, have of us "Christians", and the reality is that "its true".
I will put it this way; if you want to truly be a better Christian, then you must read this book, period!