84 Stanton St.
This is the original location of The Meatball Shop, a NYC favorite which now has two other locations in the city.
They have turned the humble meatball into an art form, serving a variety of meatballs (beef, pork, chicken, veggie) and sauces (tomato, Parmesan cream, pesto) in different combinations.
They don't take reservations, so be prepared for a long wait.