Rosario's in Astoria
You should definitely check this gem.
I love Rosario's fresh made (still warm) mozzarella you find near cashier. Also, great home made Italian sausages and Lasagna. They always have the best Prosiutto di Parma and many great cheeses. Price is Queens price. Usually cheaper than Manhattan Gourmet delicatessens.
You can also buy the greatest (New York magazine said that too) pasta in NYC by nearby Cassinelli's for the same price you pay at the Cassinelli's.
Rosario is a Gourmet genius. He always find delicious stuff and also makes delicious food.