Oli, the movie you're referring to is "Honor Thy Father," based on the book by Gay Talese, about Bill Bonannno's devotion to his father during the "Banana War" of the mid-Sixties. In that scene, Joe Bonanno has just surfaced in Manhattan after more than a year on the lam. He and his high-ranking loyalists are enjoying an Italian dinner in a restaurant when one of them (not Castellano) croaks of a heart attack. It was a great scene: Castellano fixes the waiter with a baleful, accusing stare, and the terrified waiter grabs handsful of the pasta from the dead guy's plate, shovels it in his mouth, and says, "It's good! It's good!"