The God Who Wasn't There is a highly entertaining documentary that makes a compelling argument against the historical Jesus. In an equally fascinating and entwined thread, Flemming also explores the psyche of the modern Christian. The piece has a refreshingly irreverent, witty, and independent tone similar in spirit to some of the works of Michael Moore and Morgan Spurlock. And, like those works, can unfortunately sometimes cross into a "preaching to the converted" (rather, in this case, literally "unconverted") tone. Nevertheless, if you are an atheist or an agnostic this is an absolute must-see movie and it will seem far too short. If you are a theist, in particular Christian, prepare to have your core beliefs challenged.