You can pre-order the book, Unfashionable: Making a Difference in the World by Being Different by Tullian Tchividjian.
From the foreword to the book, by Tim Keller:
Here you will learn how we must contextualize, how we Christians should be as active in Hollywood, Wall Street, Greenwich Village, and Harvard Square (if not more) than the halls of Washington, DC. And yet, there are ringing calls to form a distinct, ‘thick’ Christian counter-culture as perhaps the ultimate witness to the presence of the future, the coming of the Kingdom.
