Trivia: In an interview, the director stated that hoverboards were real, but they weren't on the market because parents didn't like the idea of floating children. He said this as a joke, but this didn't stop mass hysteria as thousands of kids went from store to store looking for hoverboards.
Trivia: Hitler was played by the actor Michael Sheard, this was the third time he had played Hitler for film and TV. Ironically, Sheard's wife was half-Jewish.
Trivia: The sound of Vigo growling is exactly the same growl that the terror dogs from the first Ghostbusters make.
Trivia: This was Timothy Dalton's second and last appearance as James Bond. He initially agreed to play Bond for a third time in "GoldenEye" (1995), but resigned from the role in 1994, believing that too much time had passed since "Licence to Kill".
Trivia: When David Banner is dreaming about his trial, the jury foreperson is played by The Incredible Hulk creator, Stan Lee.
Trivia: In 1987 Thomas Knoll made a program called "Display", as a side project. He showed it to his brother who worked at Industrial Light & Magic, and they used Display as the basis for their own effects program, which was used to create the alien water tube. The software was refined and named Photoshop, eventually demonstrated to Adobe in 1988, who bought the rights to distribute it.
Trivia: The bonsai shop building in the film was torn down years ago, but the stairs outside still remain to this day.
Trivia: William Shatner's contract for Star Trek IV stipulated that he would only be in that movie if he could direct Star Trek V.
Trivia: The first time we see Riggs in his trailer, there's an advert for some new aftershave called "Hero" on the TV. During the attack on his trailer later, there's a close-up shot of a bottle of aftershave being destroyed - freeze-frame it and you'll see the brand: "Hero" again.
Trivia: Although in real life Principal Joe Clark improved the discipline problems at Eastside High School, he did not, contrary to what the film has you believe, improve the academics in any meaningful way. Although test scores improved very slightly his first couple of years as principal (partly due to the fact that he expelled so many bad students) from 1986 to 1988, during his time as principal, Eastside High School had the lowest state exam passage rates in all of New Jersey. One of these years in particular, under Clark's tenure, Eastside High's passage rate was as low as 24.1%.
Trivia: During the fight scene between Jimmy and Dalton, Jimmy slams a log against Dalton's chest. The log you see here is a real one. Marshall Teague thought the log was a breakable prop and kept slamming it into Patrick Swayze's chest with each take. By the end, Swayze's chest was covered in bruises.
Trivia: A great deal of the film was actually shot in Japan, and it was reportedly very difficult on the cast and crew. The cost to film in Japan was very high, and the shoot was highly restricted, causing frequent issues. The original cinematographer even left production because he became too frustrated by the experience. Filming was eventually moved to the US to combat these issues.
Trivia: This film got a theatrical release in 1989 in most countries except for Sweden, South Africa and the US. It wouldn't be until 1991 that it saw a VHS and laser disc release in the US for home video. Part of the reason why it didn't get a theatrical release in the US is due to Lundgren's film Red Scorpion being a box office flop, leading to producers not believing he could lead as an action star and draw in an audience.
Trivia: Both Mimi Lesseos and Jean Kirkland who star in the movie are actual wrestlers, they wrestled as Magnificent Mimi and Black Venus for the AWA, WWF, and LPWA.