I ate dinner at Canton and lunch at Union Square during the week of Thanksgiving. The party at Canton was 6 people; 2 at Union Square.
I'm sorry I didn't get to write about these meals earlier, as I may have forgotten some of the dishes we ate.
Dinner at Canton was a very pleasant experience. We had Beijing Duck, which was not presented as elaborately as I remember for the first time we ate there a few years ago (then a 4-course production), but it was very good. We also had truly jumbo shrimps (almost as big as the ones I remember from the east coast of Malaysia) with heads on - truly great. We ordered a vegetable (kang kong, we believe) with garlic sauce: Nicely cooked. IIRC, we had a ground chicken and tofu dish. I can't remember everything, but all dishes were good. Oh yes, we had a jellyfish salad of superior quality, delicately drizzled with sesame oil. My one caveat is that Canton is expensive, and people who find paying more than $50 for dinner daunting might not find dinner there a life-altering experience. But it is very pleasant.
Union Square Cafe was terrific, just as it has been every other time I've been there (I tend to go every 2 years or so). We shared everything. We started off with a salad of superior quality - great arugula (something I don't like when it isn't of great quality). We had gnocchi - another thing I don't usually love - that were moist and had a great potato taste. We had a pumpkin bread pudding for dessert.
I'll post separately about Jackson Diner on the Outer Boroughs board.