List of non-traditional conference methods (aka unconferences)

I recently queried my Facebook friends to get their counsel on the following question:

Can anyone point me to examples of non-traditional conference methods? The old model of 'expert-in-the-front, everyone-else-just-listen-and-clap,' seems played out. Are there conferences that invert the pyramid to involve and engage everyone in participation, expertness, and action?

And the stuff they came back with is amazing. Check it out:

Appreciative Inquiry
Barcamp
Birds of a Feather
Dotmocracy
Fishbowl (conversation) -- love this idea!
Ignite
Infocamp
Knowledge Cafe
Lightning Talks
Nominal Group Technique
Open Space Technology
Pecha Kucha
Speed Geeking
TeachMeet
Unconference
World Café

So it turns out that there is a whole world of non-traditional conference possibilities.  I'm surprised that many progressive groups continue stick with the old format -- because 'expert-up-front, everyone-else-listen-and-clap'' is not consistent with our democratic philosophy and worldview. If we believe that the people have the best answers (which I think we do), then I believe we need to find ways of tapping into that wisdom.