If you are a Christian and if you live in a postmodern world (which we all do), then you need to read The Supremacy of Christ in a Postmodern World. The book wonderfully tackles tough issues that Christianity faces in our world today and how we can overcome those issues to continue advancing the kingdom.
It is a collection of essays that are taken from messages given at the 2006 Desiring God National Conference. Contributors include Mark Driscoll, Tim Keller, Don Carson, Voddie Baucham, Jr., David Wells, and John Piper. Piper and Justin Taylor are the general editors.