Sushein's sushi will slip right through your fingers if you're not fast enough. A rotating conveyer belt, like an airport carousel full of tiny, brightly colored edible luggage, carries the super-fresh morsels past diners, who can pluck up the rolls of their choice as they approach. Wildly popular in Japan, this processes, known as Kaiten-style sushi, allows diners to sample many different kinds of rolls in a lively and whimsical environment. White blown-glass chandeliers illuminate the bite-laden conveyer belt as diners watch from their perches in stylish white booths and white tables. Flat-screens broadcast anything from the game to late-night shows on Saturday, when Sushein’s sushi scoots by diners until 1 a.m.