Wow. Thanks for the posts, guys. It has been interesting to hear about what people believe.
I guess that what I believe is similar to LMo...
I'm kinda interested in this (which is similar to secular humanism in its rejection of the supernatural):
http://www.the-brights.net/
I'm not sure how well it is working to unify people under an umbrella, though... It is founded by Daniel Dennett ('Freedom Evolves', 'Darwins Dangerous Ideas') and Richard Dawkins ('The Selfish Gene' and recently 'The God Delusion'). Dawkins, in particular is unlikely to win converts with his most recent effort...
But I guess, like you, I think I have a positive belief system that consists in a whole lot more than just a denial of others positions...
Anyone else with views out there?
(Great thread guys)