I remember watching this show as a child of about 11 or 12 and even remember the theme song, although I do get mixed up in the words from the original story and the spin off story when the 'primatives' return to the present. I don't remember any of the episodes except I know I just really enjoyed the show. My children think I'm crazy when I am prompted by one of them saying "It's about time...." and I start to song the theme song - "It's about time, it's about space, it's about 2 people in the strangest place, etc.etc.....". It was really a nonsense show but good for a few (clean) laughs, something that is sadly missing on today's TV.