The one i can think of is Unitarian Universalist, which happens to be the church i go too so that i why i know a lot about it.
It isn't about God at all, it isn't about some higher "person" that you have to believe in. What it is, is a search for truth and meaning. How i see it is that it isn't about believing is someone, it is about believing in yourself and finding the meaning of life. It is pretty cool.
http://en.wikipedia.org/wiki/Unitarian_Universalism
There is some more info about if you are interested.