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: This film is based on Pentagon lawyer Adrian Cronauer's life as a DJ during the Vietnam War. He is worked in the Pentagon in its MIA/POW office until his death on July 18, 2018.
Trivia: Jack Nicholson appears in this film, although he was uncredited, and unpaid.
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.
Trivia: Although portraying high school kids in the film, Casey Siemaszko (Jerry) was 26 years old, and Richard Tyson (Buddy) was around 31 years old during the film's release.
Trivia: Kristy McNichol was the first choice for Christy Wills, but the studio fired her two weeks before filming began due to fears she might be difficult to work with due to her bipolar disorder.
Trivia: Lupe Ontiveros was just four years older than Cheech Marin, despite them playing mother and son.