Trivia: In the credits, after the entry for weapons handler, there's a credit for concealed weapons handler, a Leon Czolgosz. In case you were wondering, Czolgosz was the anarchist who killed President McKinely in 1901 at the Pan-American Exhibition in Buffalo (New York) by concealing a handgun under a bandage.
Trivia: The wedding flashback was originally filmed a few years earlier as the ending of the second NAKED GUN but cut from the film.
Trivia: At the end of the movie, when a man is sitting in his plane seat, he's reading a Playboy magazine that features Anna Nicole Smith, who played a main character, on the cover.
Trivia: At the end of the wedding scene, Frank and Jane drive away in the Eco-friendly Solar Car that was being unveiled in the second movie.