When I was a preschooler, Fraggle Rock was on TV. The Gorgs scared the hell out of me. I was lucky they didn't air The Dark Crystal back then, 'cause those fucking puppets are even more creepy.
You mentioned On the Silver Globe... There's a fascinating story behind it. It was our most ambitious sci-fi movie project of the communist era, an adaptation of The Lunar Trilogy (novels from early 20th century by Jerzy Żuławski, the director's great-uncle; AFAIK, they were never translated into English). They've been shooting it for almost two years at locations all over the communist world - in Georgia, Mongolia, Ukraine and Poland. The only "special effects" were on-set explosions (the DP risked his life by running through them with a handheld camera) and a color correction pass (made to achieve an otherworldly look). There were no optical effects, because nobody in Poland knew how to do them properly. Nobody knew how to make realistic creatures either, so extraterrestial fish were created by putting feathers on eels and carps. Aliens were played by humans in cheesy costumes with wings (and lightbulbs in the foreheads).
After approximately 80% of the film were completed, the production was shut down by the Vice-Minister of Culture, supposedly because of budget overruns (the real reason was the "politically subversive" message of the movie). The spaceship mockup was abandoned on location somewhere in the Caucasus mountains, where it was found years later and mistaken for a crashed UFO. All other materials were supposed to be destroyed, but the negative survived in some warehouse under a heating radiator. 10 years later it was found and edited together with a voice-over filling in the gaps (the missing scenes couldn't be filmed, because some of the actors died). Since the director loved Star Wars, the alien Aviy was given a Vader-like voice.
Nobody in Poland (except for hardcore movie geeks) remembers the film today. Even TV channels dedicated to obscure Polish films don't like to air it. It was a little more popular around the world (among art fags, not the general audience). George Lucas purportedly liked it 
Don't worry, Teague, NOBODY understands On the Silver Globe. The dialogue doesn't make more sense in the original Polish. Even David Lynch films are more comprehensible.