I live in Washington, DC and actually talked to a couple of people a year
ago about this. If LordDemon is still on the boards he lives in Aleaxandria, VA
and wanted to meet people. I just got busy at work. I think my post may
still be on the forums and will add a link to it if I find it.
FYI we had this up before http://www.frappr.com/recursionserver
It is a map of Recursion folks
I am now added onto the East Coast one also I do know some others
that are not on this list yet and will send them a link to the Thread
My vote is for Philly or DC. Lots of free stuff in DC to do and also
places to meet. Course if Zippy wants to see the cool trees then I
will tell you that it is not the time to come because the town fills up then.
People love the cherry trees 
I think we should do it sometime in the spring
when we could do some outside things.
Last of The Guardians