I made another visit to Bob's Noodle 66 in Rockville [305 N Washington Street], and figured I'd share some tips I picked up. I don't speak or read Mandarin or Taiwanese, which is a significant handicap in dealing with this place; I relied upon friends to point out what was good. As I think I mentioned before, it's a Taiwanese restaurant. A friend told us the food is prepared "street vendor style," a compliment.
Here's some things that we liked after a couple tries:
Oyster Pancake: a large pancake of egg, oysters & some clear gelatin-type stuff, served with red sauce, on top of wilted green vegetables. Good.
Oyster Vermicelli: great. A thick brown soup of oysters and various meats [unclear what], along with bean-thread vermicelli.
A squid soup: not as thick as the oyster vermicelli. Pretty good. More soy-based.
Sha-Cha beef noodles. I think we got this chow foon style. Also good. Don't know how to describe it.
Chinese watercress with garlic. Pretty self explanatory.
Beef with Chinese basil. Sort of like the Sha-cha beef, but with basil.
Smelly tofu [listed on menu as smelled tofu]: this comes deep fried with pickled vegetable and a soy-type sauce. The friends rated it as "even smellier than the tofu in Houston" -- a compliment. Smells sort of like festering food odor. Sort of an acquired taste, but not a bad one.
3-cup chicken: I think the menu name is some kind of chicken in clay pot or chicken casserole. A very good, gingery chicken casserole.
Dessert: shaved ice with condensed milk, syrup, and various toppings you select [tapioca balls, taro, red bean, grass jelly, yellow grass jelly, lichee, M&Ms, etc.] This menu is solely in Chinese, except for the American candy offerings.
Something to avoid: the crab claws. They were stone crab type claws and seemed impossible to break open. Also the meat didn't seem that fresh. Then again, I don't know anything about stone crabs. I was mostly frustrated by the degree of difficulty in the eating.
Not on the menu: a special black Taiwanese vinegar, available from [and sometimes volunteered by] the manager.
The place serves lunch and dinner [and maybe breakfast too -- never got out there that early]. Cash only. Very busy, there may be a wait at lunch or dinner. Service can be inattentive. Good food. Well worth a trip from DC.