Some of my Dorkbot DC cohort put on this wonderful robot c?l?bre each year. This year, Make: DC, another org I'm involved in, will be doing workshops too (using Solarbotics parts and kits). Robot Fest 2008 will be April 26 at the Historical Electronics Museum, Linthicum, Maryland. Hope to see you there.
Robot Fest
http://blog.makezine.com/archive/2008/04/robot_fest_2008.html