Dexter Heyman (Rowan Atkinson)'s final scene is a reference to many Warner Bros. "Coyote & Road Runner" cartoons, where the Coyote would always end up falling into an abyss and leaving a dust cloud upon impacting on the ground.
Richard Crenna actually consulted with Sylvester Stallone about whether he would be OK if Crenna took a part in a spoof of the Rambo films. Stallone was all for it.
Charlie Sheen worked out for eight hours a day to build up his body, as he decided that he would have felt embarrassed at the film's premiere if he had to sit amongst people laughing while looking at him on screen in a singlet.