- Harsher in Hindsight:
- Lillo Brancato, who plays C, later did fall into a life of crime and spent five years in prison for a burglary that led to the death of a police officer.
- Brancato revealed in an interview that it was during the film's production that he started doing drugs and, in a case of life imitating art, both Robert De Niro and Chazz Palmintieri tried to persuade him not to. Palmintieri took Brancato's actions very personally note and cut off all contact with him.
- Hilarious in Hindsight: Lorenzo expresses discomfort at the idea of C hypothetically dating a black woman; 4 years after this film's release, Robert De Niro married a black woman.
- Memetic Mutation: On the Opie & Anthony Show, Chazz Palmintieri and comedian Rich Vos read a scene from the movie. And to this day, every once in a while on the show you'll hear the "Louie! Beans!" done in Rich's mushmouthed style.
- Award Snub: Despite generally positive reviews, in a packed season of new Broadway musicals, the show did not earn a single Tony nomination. Many were particularly upset about Nick Cordero not being nominated for playing Sonny.
- Ear Worm: "Belmont Avenue", "Roll 'Em", and "I Like It".
- Unintentionally Unsympathetic: It's hard to feel sorry for Jane's brother and his friends getting beat up by the Italians given that they were walking through their neighborhood and loudly calling them all "wops" and "greaseballs". In the film at least, they were just riding their bikes home and minding their own business.