52. The late Merrick Butrick as David appears in a photo in Captain Kirk’s quarters, even though the actor had passed away from an AIDS/HIV-complicated toxoplasmosis in 1989, after appearing in the second season of Star Trek: The Next Generation.

53. Both Nichelle Nichols (Commander Uhura) and Brock Peters (Admiral Cartwright) had severe difficulties with the script. Nichelle refused point blank to say one line with nasty racial overtones, while “guess who’s coming to dinner” was also changed to a line from Commander Uhura to Commander Chekov.

The whole scene involving Admiral Cartwright saying “bring them to their knees” in reference to the Klingons, is a nod to another film in which it was used in relation to African Americans. Hugely unpleasant for both actors.

54. As with Star Trek V, Star Trek: The Next Generation sets were borrowed for the Enterprise-A, the engineering set being the most blatant (they literally painted a couple of things and switched ship graphics!) This suggests that the ship had a major upgrade compared to its near exterior-identical predecessor.

55. General Chang’s Eyepatch appears to be fastened by nails into the character’s face – each of these have tiny Klingon symbols that are just about visible on the Blu-ray.

56. Linguist Marc Okrand based the Klingon language on a few phrases from Star Trek: The Motion Picture which were made up by James Doohan. Some scenes had already been filmed in English for Star Trek III when he started work creating the expanded language and thus some phrases look to use similar lip movements to English to match.

During the creation of the language, Marc decided to not have the verb ‘to be’ as part of the language. As he said himself on camera, this worked out fine until Star Trek VI came along and he was asked to translate a certain line from Hamlet…