Thanks to Kelly for showing me this: a recent Bay Area ACM SigCHI panel on "Designing Systems with Emergent Behavior" featured Tim Brown (IDEO), Peter Merholz (Adaptive Path), Larry Cornett (Yahoo), and Joy Mountford (Yahoo), and was moderated by Rashmi Sinha.

Peter Merholtz blogged his thoughts here: www.peterme.com/archives/000793.html

Core77 offers a rundown of the event here: http://www.core77.com/blog/events/design_for_emergent_systems_4821.asp

And the organization's event page is here: http://www.baychi.org/calendar/20061010/