Just finished reading Jim and Casper Go to Church by Jim Henderson and Matt Casper.
Jim Henderson hired Casper to visit a dozen or so churches with him and then write about his perceptions and experience. As Casper is an atheist, his lens is different than what you might assume. I agree with a lot of his opinions. Especially taking churches to task for theatrics and mega-million buildings.
If you read this book through a purely evangelical lens, without wondering how gen x/y folks of today perceive the church (especially outside the Bible Belt), you will be offended. If you read it from a less defensive posture, desiring to learn what others that are really inquisitive see, you will benefit from it. Quick read.
The details are still being worked out, but hopefully I'll be part of a group of folks here in Denver that are hosting Jim and Casper for a series of conversations around their experiences in September.