Random Trivia For This Title:
- Spock tells the crew, "An ancestor of mine maintained that if you eliminate the impossible, whatever remains, however improbable, must be the truth." The "ancestor" Spock quotes is Sherlock Holmes, another fictional character well-versed in logic. Leonard Nimoy and co-star Christopher Plummer have both played Holmes on stage and screen. Also, director Nicholas Meyer is the author of several Sherlock Holmes novels, including The Seven Per-cent Solution, considered by many to be the best Sherlock Holmes story not written by Sir Arthur Conan Doyle.
- Michael Dorn plays Colonel Worf in this film, and Lieutenant Worf in [Star Trek: The Next Generation]. Colonel Worf is meant to be the grandfather of Lieutenant Worf.
- "Frankie and Johnny" was being filmed in the same studio, and required Al Pacino to have a surprised expression on his face after opening a door. Director Garry Marshall arranged for Kirk and Spock be on the other side of the door that Pacino opened.
- According to the producers, the Klingon blood was purple to avoid an "R" rating. Also, the use of purple blood was to serve as a visual symbol both metaphorical (showing the vast differences between Klingon and Human values and ideals) and literal (showing the differences between our anatomies; slamming home why McCoy could never have saved the Chancellor's life). Klingon blood has always been red in the television series.
- The Klingon Language Institute, an organization dedicated to the Klingon language as formulated by [?] Marc Okrand, took it upon themselves to translate Shakespeare into Klingon based on David Warner's line about hearing Shakespeare in the original Klingon.
- The official [Star Trek] chronology suggests this film takes place in the year 2293, or 27 years after the events of the [first episodes] of the TV series, which the chronology suggests occur in 2266. This is taken from a line by McCoy stating he has served on the Enterprise for 27 years. According to the chronology, Star Trek VI therefore takes place about six years after the events of Star Trek V, and some 22 years after the events of Star Trek: The Motion Picture.
- The casting director was [?] Mary Jo Slater, mother of Christian Slater. Thus his blink-and-you've-missed-it role as a Communications Officer aboard the Excelsior.
- First [Star Trek] production to officially establish that Kirk's middle name is Tiberius and Sulu's first name is Hikaru. Tiberius had been mentioned in an episode of the [animated Star Trek series], however by this point the cartoon was no longer considered canonical. No first (or last) name is offered for Uhura in this film, which is taken as confirmation of Gene Roddenberry's contention that she has no other name.
- Christopher Plummer's character "General Chang" was originally to have had hair, but as his makeup was being applied for the first time, Plummer liked the bald look and had the makeup technician omit the hair.
- According to Nicholas Meyer, Brock Peters found Admiral Cartwright's words during the briefing scene to be so offensive he needed several takes to get them all out. In a similar vein, Nichelle Nichols refused to utter the joke line "Guess who's coming to dinner?" - an intentional reference to the famous film about racism which is heard prior to the Klingons' visit to Enterprise. The line was instead given to Chekov.
- Nicholas Meyer was worried that William Shatner would be upset at some of the lines written for the scene where Martia, disguised as Kirk, fights him. However, Shatner reportedly loved it.
- At the end, when Chekhov asks Kirk for a course heading, Kirk smiles and says, "Second star to the right and straight on 'til morning." That is a reference to the directions Peter Pan gives to get to Neverland in the classic story Peter Pan by J.M. Barrie.
- The Vulcan female onboard the Enterprise was originally written to be Saavik from the previous three movies, lending greater impact to her betrayal. However, neither of the actresses who had played Saavik (Kirstie Alley, Robin Curtis) were available and Gene Roddenberry also insisted that they couldn't villify a character so beloved by the fans, so the character was rewritten into Valeris, who is played by Kim Cattrall.