The Trouble With Tribbles - S2-E15
Trivia: Stanley Adams, who appears in this episode as Cyrano Jones the tribble peddler, later co-wrote the season 3 episode "The Mark of Gideon".
Trivia: In any poll, "Spock's Brain" unfailingly wins the title of Absolute Worst Star Trek Episode - Ever. Gene L. Coon wrote it under his pen name, Lee Cronin, but never intended to actually produce it. His terrible script was a practical joke, a jab at Gene Roddenberry after they'd argued over where the series should go. But by season 3, both Coon and Roddenberry had left the show, and their clueless replacements filmed the thing, thinking this shark-jumping episode was great stuff.
Trivia: For a lot of the first few seasons: When it was time to officially shoot the episodes, William Shatner would be late getting to the set, and when he finally showed up, he was drunk! But no one could really stop the filming to wait for him to be sober, so they would film the episode with Shatner in a dramatic tone (he never spoke that way on purpose, he was just so drunk he didn't realize how he was talking, and that's why it's become so infamous today).
A Piece of the Action - S2-E17
Trivia: According to the script and audio of this episode, the first Boss is named Bella Oxmyx. But all posters of Oxmyx have the last name spelled "Okmyx." The reason is the as originally written, Okmyx would have been correct, but all material with Okmyx had already been made. Since it was a tight budget, the name was only changed at the time of filming.
Trivia: All the action in this episode revolves around McKinley Rocket Base. All footage around the base is actually of Cape Canaveral, Florida, provided to Roddenberry by NASA.
Trivia: When Scotty orders the blackout on the planet, the camera looks at Chekov's hands. It is a re-used shot of his hands from Season 2 Episode 4 "Mirror, Mirror."
The Empath - S3-E12
Trivia: Although the two Vians are identified as Thann and Lal in the closing credits, they are never referred to by name on screen.
Trivia: Although James Doohan's voice is heard over a communicator, he is never actually seen in the episode.
Suggested correction: Stating the obvious is hardly trivia. This is also not the only episode where members of the crew are seen but not heard.
I never knew that! While obvious if you watch the episode itself, bear in mind lots of this is just read by people browsing, reading for background info, not necessarily people watching the show, or who've seen the episode in question.
Trivia: This is the only episode that doesn't feature any scenes set aboard the Enterprise.
Trivia: Dr. Sevrin is based on Timothy Leary, a psychologist and writer.
For the World is Hollow and I Have Touched the Sky - S3-E8
Trivia: The voice of the Oracle was played by James Doohan.
Trivia: Colonel Green's uniform became Mork's in Mork and Mindy.
Trivia: The painting on the wall in the office is an actual painting by Reginald Pollack.
The Ultimate Computer - S2-E24
Trivia: James Doohan provides the voice of the computer M-5.
Who Mourns for Adonais? - S2-E2
Trivia: Originally they wanted Jon Voight for Apollo.
