♪ on top of spaghetti all covered with cheese ♪ ♪ i lost my poor meatball as everybody knows, the best part of spaghetti and meatballs is the balls. >> that's right. that can be why a new mini chain of restaurants right here in new york is so popular and very, very good. as part of this week's series "extreme eats" i visited the meatball shop, a place that has taken meatballs to a whole new level. >> so it's fair to say you and dan are pretty passionate about your balls. >> yes. our balls are our number one passion. dan and i grew up in new york city together.