Not sure if it has been covered but I was near Rockville today and decided to stop by one of my favorite lunch places, Kam Sam Grocery Store. It is a chinese grocery store near downtown rockville.
They have a lot of prepared food and for lunch you get a bunch of rice and a choice of 3 dishes for $4.25. This has to be one of the best bargains in town.
My wife got mopo tofu (pretty good, could have been spicier), deep fried eggplant (excellent), and a giant meatball (really good).
I got acorn jelly salad, pickle cucumber, and spare ribs. They were all outstanding!!! Kids got steamed/pan fried dumplings.
It is safe to say, it is really good chinese and an unbelievable price. I also find the one in Rockville so much cleaner than the one in Annandale.
Give it a try if you are in the area.