Soup in Chinatown
They have it at Peking Duck House, and a few other places. Search menupages for "sizzling rice" (include the quotes or it'll search for the two terms separately) and a few will come up, most of them in Brooklyn - also search "wor bar" (which I think is the same dish - though it might be more of a stew than a soup)
As to which one is The Best... dunno. There's not much out there to pick from, and it's all over town.
Peking Duck House
28 Mott St, New York, NY 10013