A few years ago the T4G guys published a book called Preaching the Cross. That book promoted the idea that the cross of Christ should be at the center of our preaching. I couldn't agree more.
I just recently stumbled upon a sequel to Preaching the Cross which is entitled Proclaiming a Cross-Centered Theology. Like the first book, this text focuses on the cross. The difference between the books is that this one focuses more on the importance of preaching and teaching a theology of the cross.
This book was a good read. If you love the atonement, you will enjoy it. In my opinion, the chapter written by R.C. Sproul, entitled "The Curse Motif of the Atonement," is the high point.
The cross is the center point of Christian theology. This book gets it right.