Trivia: This was Johnny Depp's first movie.
Trivia: Michael Biehn gets bitten by Sarah Connor in Terminator, by the child in Aliens, and again in the Abyss. All three films were written and directed by James Cameron.
Trivia: Was the highest-grossing R-rated film of all time for nearly twenty years until "The Matrix Reloaded" upseated it on June 3, 2003. In the history of R-rated films, it held the longest record for high grosser (19 years).
Trivia: In the first scene of Burt and Vicky in the car there is a copy of Stephen King's 'Night Shift' on the dashboard of the passenger side. A little homage to King in that the short story 'Children of the Corn' is in this book.
Trivia: At the beginning of the movie Kirk rescues McCoy from a jail of some sort. Before leaving Kirk asks McCoy how many fingers he's holding up and does the Vulcan hand thing. However, Shatner had severe difficulties putting his fingers into place, they just wouldn't hold into position. So the crew wound up wrapping fishing line around Shatner's fingers, he would put them into position out of the camera and the shot quickly jumped while his fingers where still in place. If you look closely you see the line around his fingers. (Note that this problem occurred several times during Star Trek, actually, Nimoy and Leonard seem to be the only people doing this without a problem.)
Trivia: An interesting scene to watch is when Heywood Floyd is talking to his associate on the bench in front of the White House, there is a long shot when you can see a person feeding pigeons. It is none other than Arthur C. Clarke in a cameo appearance. (00:10:59)
Trivia: When the Tri-lambs are watching the Pis on television, Pointdexter ejaculates in his pants which causes a fit of laughter. The laughter is coming from director Jeff Kanew.
Trivia: In the final scene, when Winston and Julia are playing chess, Winston uses a tactic of going around and hitting from behind. Only minutes later, the news report that Oceanarian forcer defeated Eurasian forces in Africa by using the same tactic. Nothing major but it makes a good point about the rate of citizen monitoring and news manipulation in Oceanaria.
Trivia: Scream Queen Linnea Quigley appears in the movie as a babysitter.
Suggested correction: How is someone being in the cast a piece of trivia? Unless it's something notable like one of an actor's earliest roles, or a final appearance, it's not really interesting enough to be considered trivia.
Trivia: The scenes of Billy and Christie gawking at the final battle between the two ninjas were filmed months after principal photography. Lucinda Dickey is wearing a wig because she had already cut her hair short for her role in Breakin'.