First of all i found this [link] crazy cartoon with a story that goes something like this;
Basically its a story about the future, about a world that is uninhabitable due to wars and pollution. The last remnants of humanity live in an underground cavern. The people there have lived a long time, and have a long foretold prophecy that when the lava river rises (the river which provides heat to the people there), it would be time to approach the surface once more.

Then i found George Lucas's first film called THX 1138, i havent seen it or heard of it but it looks cool for something made in the early 70's, heres a link to check it out [link]

Oh and this cartoon called StarChaser the legend of Orin is just the ducks nuts [link] i HAVE to watch all of this cartoon.For a cartoon made in 1986 its got some very good artwork.The good old days of cartoons i like better, but i suppose that's cause im older now haha

Hope you enjoyed some obscurity from the net, please tell me if you have any obscure favorites from the past, i love checking out the unknown and weird and wonderful