Adventures in Missing the Point: How the Culture-Controlled Church Neutered the Gospel by Brian D. McLaren and Tony Campolo is a kind of tag-team book. First one author writes a chapter, then the other writes a rebuttal or clarification. The subtitle of the book spells out the thesis pretty clearly--the evangelical church in America fell prey to cultural influences and neglected the gospel's message, substituting something related but not quite right. The indictments mostly deal with evangelical churches, because that's where our authors come from. The liberal churches notoriously went their own way long ago. The Catholic church seems to have become an umbrella organization covering a wide spectrum of belief and practice. But the evangelicals pride themselves on keeping close to Scripture.
As one example take the chapter that deals with the church service itself. The authors assert, and I can confirm, that many churches work hard to provide an emotional atmosphere that is supposed to be conducive to piety. They calibrate the songs for emotional effect--but they seem to be afraid of silence. And in the end it is not our emotions we meet to get in touch with, but God.
Other points: The Gospels demand that our beliefs work themselves out in action, in helping our neighbors. That requirement is not entirely fulfilled by preaching the gospel to him--it needs to be tangible. (Charles Williams once said that "In the end, all loves must be physical.") I am not better than the notorious backslider--he is just notorious and I'm not. But how easy it is to feel and act superior!
I'm afraid I agree with Campolo that McLaren defines postmodernism entirely in negative, and therefore rather useless terms, and judge it a pretty worthless foundation for studying theology. And I have no idea why they want to try to revisit the adequately clear and humane orthodox doctrine on homosexuality--unless they too have been snowed by the local culture. Aside from my complaints about those two chapters I have no hesitation in recommending the book.