I have long advocated the creation of an atheistic theology. Yes, I know it sounds like a contradiction in terms, but it's not. It is simply an expression of rational scientific thought using the language of myth. The reason for doing it is that, like it or not, myths are a very effective marketing tool, and it's high time that we rationalists availed ourselves of it. Our failure to create effective myths amounts to unilateral disarmament in the war of ideas.
There have been a few half-hearted efforts in this direction, including the Flying Spaghetti Monster and Raymond Smullyan's famous essay Is God a Taoist?. But these are self-identified as fiction and parody, and are therefore self-undermining. Even my own suggestion of adopting Loki as the foundation of an atheistic myth suffers somewhat from this problem.
Today I learned to my great delight that a fellow named Harry Stottle is in fact an atheist who has actually talked to God and written an account of his experience. Highly recommended reading. It is a rare privilege to have (from a cosmological perspective) a front-row seat to divine revelation.