Socialtext is opening it's doors to host DCamp, the first ad-hoc event focused on design & user experience, May 12th & 13th. The folks at BayCHI are initiating this one, here's Rashmi Sinha's announcement:
D is for designers and D is for developers. We hope that this event will attract both designers, developers and anyone else who cares about the user experience. We hope that we will address issues of mutual concern together under the same roof and help build connections between the various communities that care about User Experience.
Go to the wiki, you know what to do.