Trivia: Not really a mistake, given the need to maintain the story arc in the first half of the film, but in real life, Pyle would have been discharged from the Marine Corps within days of his starting basic training - for his own good. It happens all the time - dropout rate of boot camp recruits varies but is generally around 10%.
Trivia: Kevin Peter Hall, who plays the Predator, also appears as the pilot of the general's helicopter at the end of the film.
Trivia: Mel Gibson references the Three Stooges several times in the film. In real life, Gibson is a big Stooges fan, and in 2000, he produced the biographical TV movie "The Three Stooges."
Trivia: Stan Winston's face was the model for the Wolfman.
Trivia: During the making of this movie Christopher Reeve and Sidney J. Furie didn't get along at all and often clashed with each other.
Trivia: In his regular cameo role, producer Michael G. Wilson appears in the audience at the Opera which Bond and Kara attend in Vienna. He can be seen sitting next-but-one to Saunders.
Trivia: In the scene where Foley first visits Rosewood's apartment, he at some point pauses and looks at a poster of Sylvester Stallone from the movie "Cobra" (1986). Stallone was originally supposed to star in Beverly Hills Cop (the first one) as Axel Foley (or his name was going to be Axel "The Cobra" Cobretti). The script was changed for Eddie Murphy, removing a large amount of the action sequences from the movie. Many of those sequences were later used in "Cobra." The shot of Foley looking at the poster is a reference to this fact.
Trivia: Richard Dreyfuss and Emilio Estevez were having a movie trivia contest on the set one day. Estevez asked Dreyfuss to identify the movie that the line "This is no boating accident" was from. Dreyfuss didn't recognize the quote, despite the fact that he was the actor who said it in Jaws (1975). Deciding that this was too good to pass up, this incident was re-enacted for the film.
Trivia: In several scenes where H.I. is in the factory where he works his work suit has a "Hudsucker Industries" patch on it. The Cohen brothers who directed and produced the movie also put out a movie a few years back called "The Hudsucker Proxy."
Trivia: The punch that Bull Hurley gave Hawk during the final match that made his nose bleed was real. Stallone told the guy to do it since he was the director but didn't give him a "cue point" in which to do it. Meaning Stallone never knew when it was going to happen so that his reaction would be authentic to the hit. Stallone stated that he took more punishment in trying to be authentic in this movie by taking actual hits such as this one and arm-wrestling professionals that were hired for the film, than he did in any of the Rocky movies.
Trivia: The filmmakers used two different shopping malls for the scene where the doctor injects Tuck into Jack's rear. The opening scenes where the doctor runs in and heads for the elevator were shot in the Northridge Mall in the San Fernando Valley in Los Angeles. The scene where he reaches the top and rams the syringe into Jack was filmed on the top floor of the Sherman Oaks Galleria, another mall several miles away.
Trivia: Jackie Chan hadn't originally planned on making a sequel to "Project A." However, the Japanese Emperor personally told him he was a fan of the first film and wanted to see a sequel, leading Chan to decide to make this film.