Suggest locations for next meetup

Here are some thought I had on some criteria for a good location:

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  What are your ideas? IKEA at Potomac Mills worked well. The parking lot near Jimmy's Old Town Tavern in Herndon worked out okay.
  
  If you Maryland folks can round up a confirmed contingent I'm not averse to crossing the river once in a while; what about you other NoVa folks -- are you willing to sacrifice some highway mpg sometimes until we grow enough to sustain two local groups? Does DC have any suitable locations? I haven't seen any but that doesn't mean they're not there.