Messed up films/shows from your childhood

In 1980 I was 8 and went to see The Empire Strikes Back and preceding it was a short film called "Black Angel" which really messed with my head.

It's never been released on video or DVD though last year the original director found what is believed to be the only print of it anywhere.

George Lucas apprently paid for it personally as a thanks to the art director of Star Wars who wanted to make a film of his own and it's become semi-mythical because no-one anywhere has seen it in 30 years since that original release.

http://www.shadowlocked.com/20100309134/interviews/exclusive-interview-the-worlds-of-roger-christian.html