Does anybody remember The Great Space Coaster? It was a syndicated kid's show that ran from 1981 to 1986. I used to watch it all the time before school when I was in middle school. Although I think the show was really aimed at kids younger than I was at the time, I found it so enjoyable that I couldn't resist. There were other kids my age who also indulged in the Coaster.
The show had the most wonderfully memorable opening. (Above, courtesy of Retrojunk.com.) I just love it.
The show focused on three young people (Francine, Danny, and Roy), who took a spceship to this funky asteroid populated by a bunch of fantastic characters. Probably the most prominent of these characters is a shy clown named Baxter, who also had the ability to become invisible. See Baxter, above. (Frankly, at the time, I wasn't exactly sure what Baxter was. He was just Baxter.)
The Wikipedia article describes the show further:
The asteroid is populated by strange-looking, wise-cracking puppet characters such as Goriddle Gorilla, Knock-Knock the Woodpecker, Edison the Elephant, and Gary Gnu (host of newscast The Gary Gnu Show). Baxter is forever on the run from M.T. Promises, a nefarious ringmaster who plans to re-capture Baxter and return him to the circus he worked at before he escaped. Each episode ends with a different life lesson, and various celebrity guest stars (such as Mark Hamill of Star Wars fame and composer Marvin Hamlisch) occasionally dropped by.
Above is a clip featuring Gary Gnu (the gnewscaster with the only gnews show guaranteed to contain no gnews whatsoever!) interviewing another character, Goriddle Gorilla. (Thanks to TGSCoaster on Youtube.)