A & J Restaurant
4316 Markham Street, Annandale, VA - (703) 813-8181
Small, cheap dishes of Northern Chinese (almost no rice, lots of beef, pork, noodles, great big soups) food that is the best Chinese food around. It's different than most Chinese joints (which are all southern-influenced).
Best Cheap Eats for about a decade now (Washingtonian Magazine)
http://www.washingtonian.com/restaurantreviews/2095.html