Trivia: Paramount's press releases in 1967 claimed that the Soviet news agency Pravda had complained about Star Trek having no Russian characters, so they were adding Chekov. This story was completely bogus. (Star Trek never aired in the U.S.S.R.) NBC wanted to appeal to the 8-14 teenybopper crowd, and asked Roddenberry to add a character who looked like Davy Jones of the Monkees. So Chekov debuted in season 2, replete with a bad Beatle wig that was, thankfully, soon jettisoned.Jean G
Trivia: At the very end, in talking about the future of the two characters, Spock says, "We could say that Mr. Seven and Miss Lincoln have some interesting experiences in store for them." While this seems like a strange thing for him to say, this episode was a "backdoor pilot" for a spinoff series with the same title (see Teri Garr's Wikipedia entry). But the idea wasn't sold and Mr. Seven and Miss Lincoln never had any further interesting experiences. The Enterprise's history log was evidently wrong.
Trivia: Some parts of the film Kirk and Spock watch are historical footage, some of it is made specially for this episode. If you look very closely you can see the Fuhrer Adolf Hitler in a car at one of his ceremonies. Beware he is hard to spot, because most of the time his head is behind some flags. (00:06:20)olohzika
Trivia: In this episode, Scotty tries to get a Kelvin drunk. When asked what the liquor is, Scotty says "It is green." In the episode "Relics" (The Next Generation) Scotty asks Data what the unnamed liquor is, Data sniffs the bottle and says "it is... (sniffs)...it is... (sniffs)...it is green"Movie Nut