Neramitra Thai - Crystal City, Va.
I was there twice recently.
The first time, I had a crispy duck dish (I think there is only one on the menu) with basil and hot peppers that was terrific. Also a fusion-y salmon in green curry dish that hit the spot. The second time, had a round of dishes that were all monotonous, with sugar being the unifying theme. If you go, get the duck, but after that you'll quickly run out of top choices.
I'd go back if I was on the block, but I'm not going to make a detour to eat there.