Has anyone else seen this 1973 Canadian Sci Fi TV show, The Starlost?
It was a super low budget adaptation of of Harlan Ellison's book, Phoenix Without Ashes - a story about a huge generation ship on its way to colonize a planet, and society on it collapses back to a primitive state and each section of the ship is like a different tribe. Meanwhile the ship malfunctions from lack of care and the engines are offline and it's drifting into a star.
I was like 9 when this came out, and totally oblivious to the abysmal quality of the production, I was just so fascinated with the concepts here. It might be partly responsible for getting me into Sci Fi. (Lost in Space and Star Trek were big reasons tho too..)