Farrah Fawcett and Adrienne Barbeau's cleavage exposing exploits.
Also, at no point in the film was Farrah Fawcett wearing a bra — Not surprising, given 70s fashion liked the braless look.
Critical Dissonance: The film was hated by critics, but was one of the highest grossing films of 1981.
"Funny Aneurysm" Moment: In the second film, Mack (Joe Theismann) is fighting a group of mobsters when he gets tackled by several at once. The following year, Theismann was the victim of a similar tackle that broke his leg. The injury was so severe, he had to retire from football.
Farrah Fawcett became code word for "Celebrity death overshadowed by another event" when she died hours before Michael Jackson. Roger Moore suffered the same fate because his death was the day after the deadly Manchester bombing.
Hilarious in Hindsight: In the first film, the Japanese team picks up a police speed trap on their radar detector. One of them refers to the officer as a "Kojak with a Kodak". In the sequel, Big Bad Hymie is played by Kojak himself, Telly Savalas.
Retroactive Recognition: This was Jackie Chan's second attempt to break through to American stardom after the disastrous flop The Big Brawl. This film was more successful but he still didn't catch on (likely overshadowed by the numerous other stars) and had to wait until Rumble in the Bronx.
So Okay, It's Average: In the The Good Place universe, II is stated to be the most average, forgettable film to ever exist. The IMDB score is at 4.8, so it's pretty damn close.