Trust any restaurant that's got a line-up on a Tuesday night! The host warned me it would be 20 minutes before we got a table, but I was seated in ten--my friends hadn't even gotten there before I sat down.
Service was slow because the place was so crowded, but the dumplings were fabulous. I wouldn't order anything that wasn't on the dumpling menu, though--we also tried the steamed buns and the sesame balls, and both were disappointing (the ratio of filling to dough in the beef buns was way off--too much tasteless bun, not enough meat, and the sesame balls were chewy and kind of gross).
Still, the dumplings were delicious and totally hit the spot--I'd go back!