Sushi UO is a year old, but it finally got around to putting up a neon sign that blazes "Sushi" like the Batman beacon. The walk-up space will remind you of exactly what it is: A tenement apartment. The sushi and sashimi are of higher than average quality, but also a bit expensive. If you have the resources, opt for the tasting menu, which features unexpected oddities as well as old favorites. Meritorious individual dishes include a tasting plate of raw orange clam presented in its shell, big clam cut into novel spiked rings, and sliced scallops. From the kitchen, the fried rock shrimp--half coated with wasabi mayo, the other half with hot sauce--provides a generous appetizer for three or four, while the best sushi deal is the chirashi.