Metafilter takes a look at the forgotten and reviled 1973 generation-ship SF series The Starlost, which I have never heard of. Sounds totally fascinating, combining elements also seen in Silent Running, Space: 1999, Logan’s Run, Roddenberry’s Genesis II, and of course the original Battlestar Galactica.
Boy, mainstream TV SF sure had a hardon for the apocalypse, didn’t it?