One of the things that draws people to visit, live or remain in New York City is the sense of the unexpected, the thrill of discovering something amazing in a completely random place. Take the pizza slices at Rosario's Deli in Astoria. By all appearances, Rosario's is a typical Italian deli. Boxes and boxes of imported pastas line an entire wall. A refrigerator case of Italian cheeses and meats greets you as you enter. But locals know that in the back of the store is one of NYC's best pizza slices. It might have something to do with owner Rosario DiMarco's access to great ingredients. Imported Italian tomatoes are cooked down to a concentrated savory sauce, and the mozzarella cheese is freshly made in the deli several times a day.