Per Al Jackson:
"I went to the World Science Fiction convention in Cleveland in 1966. Gene Roddenberry came to that convention and showed two pilots for Star Trek. I remember the audience was a bit surprised and quite enthused, since no one had done any adult space opera since
Forbidden Planet.
I remember, at least from what I had read and Dallas BNF Tom Reamy, who came to Tricon, knew, there was no hint that a TV pilot would be shown, but then Houston and Dallas were always on the outer circle of fanish grapevines.
I asked a friend of mine here in Houston who was also at Tricon what he remembered.
We both thought the Star Trek pilots were screened on Sunday but the pocket program says Monday, so seems that was so.
We both remember that Roddenberry was an amiable man and kind of soft spoken but had a knowledge of modern science fiction. Roddenberry gave a short introduction and told us there were two pilots, saying ,without any explanation, NBC wanted a 2nd pilot. My friend says "Where No Man Has Gone Before" was shown first and "The Cage" shown second, I remember it the other way around. Both were in color.
I remember the fan response was very positive, there just had not been much SF on TV and the 1965
Lost in Space was considered very juvenile and not very good*.
At Tricon on Saturday there was a screening of
Fantastic Voyage, a clunker of a ‘SF’ film. Shown in a Cleveland theater nearby on Saturday. I remember Harlan Ellison and Isaac Asimov, in the audience, doing a not so muted MST3K number on the film. Later Asimov did a novelization and fixed up a lot goofy stuff in that movie.
Next day, I was walking in a hallway at the hotel, in an alcove, there was Roddenberry standing by a model of the Enterprise. Nobody was talking to him! So I went over and he asked me what I thought, I said I was very pleased and saw a lot in those pilots that looked very familiar to a science fiction fan. Roddenberry was really pleased with that and launched into a long story about when he was in the Pacific in WWII he used to read
Astounding Science Fiction magazine. He always wanted to do an adult TV space opera, so he borrowed all the nomenclature and settings from the page and used those in Star Trek. He said he could not do any better than the writers, picking up FTL, matter transmitters, ‘tunable’ hand weapons (set either to blaster or stun), energy projection weapons , other techno-stuff like that... also ideas like a ‘Federation’ of planets.... Lots of ideas that had been common currency in prose SF since the 1930s. He was enthusiastic and knowable of modern SF on the page. (Well some prose SF was adapted for the TV show.) I wish I had asked him about Forbidden Planet.
In later years, I saw him at cons, but could not get within 10 feet of him such were the crowds. I did talk to D C Fontana , story editor for the show, in later years, she was nice and knowledgeable too."
Obviously, verify against known facts. At the very least, that will help determine the accuracy of Al's memory.