This was fascinating - McCracken explores the "cool" movement that is sweeping through churches in North America (and sometimes out of it). He spent a good amount of time in research traveling to all kinds of hip churches (Mars Hill, various Greek and Latin-named structures) and interviewing emergent-ish pastors (Rob Bell, Mark Driscoll, etc.) and writers and asking them all about what place "cool" has in modern Christianity.
I have to say - part of this book made me want to be a hipster. Living in Alabama, I think it's safe to say my community and church suffer from a bit of a dearth when it comes to cool thinking. You would be hard pressed to find any skinny jeans or neat beards in our congregation. I don't want a neat beard myself, but I sometimes get an eensy bit tired of seeing only blue haired old ladies and men in suspenders who aren't wearing them in ironic appreciation. I think it would be refreshing to hear a Sufjan Stevens song in sanctuary worship.
But the last part of the book deals with the notion that we as a culture have become obsessed with cool, and Christianity doesn't cater to culture's obsessions. Christ points us towards truth and grace in a straightforward and bold way, and He isn't concerned with whether or not I'm wearing the right skinny scarf or have an appropriately indie song playing in my car when I speak to Him.
Definite food for thought.