I haven't explored this website fully, but the "emergent" church has been talked about off and on at Trapdoor, my other online hangout, and thought it might be worth looking at. A few of us have tried meeting for what we called house church but we couldn't seem to find a way to make it work. This website seems to have a few ideas, though the whole idea of the emergent church becoming it's own almost denomination with leaders and collecting a fee is somewhat of a turn off for me.
http://emergentvillage.com/Site/index.htm