I mentioned I attended D.C.'s first BarCamp, a technology unconference, where my geek abilities were stretched to their limits. But I learned a few things, and the relative low cost of production and the quality outcomes make me think again this is a good model for the more adventuresome church people -- Unitarian Universalists, Christians or both -- out there. And I still think an unconference alternative/option with General Assembly is a good idea.
I went to BarCamp to learn the model and process; I didn't succeed so much with that, but this post-mortem from the 2006 Los Angeles BarCamp is full of good ideas and details for anyone planning a meeting of any kind.
I did like the name tag administration at BarCampDC. It only had three fields: name, "where you are from" (place or employer) and what interests you. This last is the innovation. By adding category tags, its easier to make introductions and connections. Nifty.