The New Shmoo (Hanna Barbera, 1979)
Al Capp, the cartoonist behind Lil' Abner and (thereby) the original portrayals of the Shmoo, passed away just two months after this show made it onto the air. We can't even begin to imagine what the outspoken Capp must have thought of his parable for the Earth's bounty being turned into a mystery solving shapeshifter. It was one of the last of the teen mystery/adventure cartoons not to involve Scooby Doo himself that HB would bring to Saturday morning, and watching this, you can kind of tell why the subgenre was in its last days.