Huge East Coast anime convention: http://otakon.com/default2.asp
Where: Baltimore Convention Center, Baltimore, Maryland
When: July 17-19, 2009

Model contest information:
http://www.otakon.com/events_modelingcontest.asp

I will also be doing a workshop for gundam and resin figure model building, but I do not know the schedule yet.  I will post that up as soon as I get that information.