Remember that book Pagan Christianity by Frank Viola and George Barna? It made quite a splash as it argued that nearly everything we do in and for church these days is unbiblical and unhistorical. Em-church fanboys ruined their copies with drool.
Several good minds have already documented the problems with the book's claims, but now no less than Ben Witherington has reviewed it. Which is to say, he puts the scholarly smackdown on it. Read it here.