Just like the downtown Nobu, except on steroids. And powerful hallucinogens. David Rockwell-designed duplex goes for baroque. Ridiculously opulent space attracts flocks of chatty singles sipping martinis at the bar. Despite nightclubby atmo, delivers on creative and often spectacular sushi formerly only available in De Niro’s hood. Inventive combos like halibut cheeks with wasabi pepper sauce, or yellowtail and jalapeño.