I'll be in DC for a few days by myself, and I'm looking for some classic bars, restaurants, cheap eats, etc., particularly those that are "classic Washington DC." Fine dining suggestions are welcome too, but I'll be dining alone. So, for example, is there bar seating at the Blue Duck? Because that's a place that sounds pretty good to me. Otherwise, suggestions for dive bars, Ethopian, Chinese, other international cuisine, and the places that the politicos hang out to make those shady deals -- all would be welcome. Thanks in advance!