Actually I found that most Chinatown's fried rice is not as good as they should. I think because most Chinese don't usually eat fried rice esp when they're in Chinatown.
In NYC, Tse Yang on E51st has my pick. Their rice is very fluffy but not greasy. They use fresh shrimp, and are not tough. A little bit of egg and green onion and cha siu (roast pork). It tastes surprisingly good. But their other dishes were not very authentic.