Alan Jacobs is an English professor at Wheaton and is an author that I've recently stumbled on.  He's written a biography of C.S. Lewis called "The Narnian", but the book the book that I'm reading now and has really impressed me is called "Original Sin:  A Cultural History".  It's written as a historical narrative about the ancient debate about what Original Sin means and if it is really true, and uses examples of historical episodes that demonstrate the theme.  It reads like a book on current events (and an easy read at that), but hits on the major doctrinal issues behind this dogma that has been so controversial since the birth of the Church. 

In the last few weeks, I've found a need to understand the doctrine of Original Sin as I engage in discussion about free will, election and God's justice with my sunday school class and small group.  This book has helped enormously already, and I'm not even finished with it.