Oh, and I need to correct myself -- Filmation's Space Academy and its spinoff Jason of Star Command were set aboard a space station. So I should've said that nobody else had really done a space-station show in prime time. Unless there's something else I'm forgetting. I don't count Space: 1999 because that was a surface base on the Moon, and because the Moon was wandering around so impossibly fast through interstellar space that it was effectively a spaceship show from a structural standpoint. As for UFO, I know there was a featured space station there, but it was primarily an Earth-based show, I think.