A sushi place with an authentic twist: You get to choose your meals from a magnetized conveyor belt that goes around the (japanese!) sushi chefs working in the middle of the restaurant. Not too pricey, either: We usually pay about CHF 80.- for two people, and we leave absolutely stuffed.
So if you're into authentic sushi and you're in Zurich, don't miss Yooji's. Check their website, they have another restaurant on the other side of town.