I've read some books by Frank Viola and think that his article to the "Emerging Church" is quite well written. I enjoyed it so well that i had to post it even though Andrew A.K.A Tallskinnykiwi already did.
The influence of this conversation has been no less than incredible. So much so, that at least to my mind, it can be better described as a phenomenon. And it is picking up steam with each passing day.
I am a student of church history. My studies have led me to make the following observation: Every phenomenon and movement that has set out to reform or renew the church was born with profound shortcomings and weaknesses. And these shortcomings and weaknesses were never addressed until it was too late for them to be corrected. In my own lifetime, I have seen this to be true for the charismatic movement, the Jesus movement, the third-wave movement, and the house church movement . . . just to name a few.