As a disclaimer, I went for breakfast and ordered a dairy item. Other reviewers have looked more favorably upon other items, so those might be better. If I were to go again, I'd go for lunch or dinner and order some combination of smoked meat and kreplach.
That said, I went for breakfast and ordered the blintzes. The inside cheese filling was ok, but I've had better. The outside was a bizarre shade of yellow, and the dough's flavor and texture were a bit heavy relative to most other blintzes I've had. That said, they were definitely tasty enough that it might have been a regional style. I also tried some rugelach from the dessert counter, and those were very good.