On in two parts, Saturday and Sunday...if you missed an episode you were a complete non person at school on Monday morning.
Some great ones on here already, but nothing can touch either of these. I'd go as far as to say that if I was even in a covers band, I'd begin every encore without fail with Jossy's Giants. It's an absolute monster!
That whole show is an absolute masterpiece. Obviously I never really clocked the serious philosophical themes running through it until I watched it again as an adult. One of the highlights of my last trip to America was seeing the Fraggle puppets at the Henson museum in Atlanta.