Since I moved to D.C. 2 1/2 years ago, I've found that sushi is actually a staple part of my lunch diet. I go to a small Japanese place tucked away-- the sushi chef is great, and you can hand pick your pieces for an exceptionally reasonable price (a pound of sushi for something like 11 dollars). Typically I get the raw salmon and tuna over beds of rice (rigiri) and a couple vegetable rolls. Very simple stuff. Wouldn't be surprised if I eat it 10 times a month.