I've seen those. Those Super Mario episodes (The Super Mario Bros Super Show) must have been extremely low budget. Usually, there would be a pretty bad live action segment followed by a terrible cartoon. To be fair, most Saturday morning cartoons were terrible - maybe as an incentive to get kids outside? Anyway, the to give TSMBSS mass-market appeal, the cartoon segment has a rap intro. When the credits rolled, it featured the live-action Mario (a sort-of-Italian white guy) rapping and 'dancing' while the credits rolled. You just have to see it
As for the Zelda cartoon - no rap intro, just narration. It is obvious one of the writers was a huge fan of Steve Martin, and tried to transfer some of Steve's stage persona to Link. Link doesn't pull it off - at all. He comes off as a whiny entitled punk seeking a kiss from Zelda. The entitled part might be why is isn't getting any. Maybe they should've gone with the Rodney Dangerfield "I get no respect" line instead?
- OT: Good Saturday morning cartoons
Mighty Orbots - Saturday morning sentai-type Japanese animation (small team, combining robots, etc). Single 1/2 season, 13 episodes (includes ending). Only aired for about six months. Production halted by a lawsuit from Tonka (GoBots). Not widely available.
Gummi Bears (Disney's Adventures of the) - Since this is from the 80s, it's likely locked in Disney's vault
Thundarr the Barbarian - futuristic fantasy. Like Conan, but set in the future. A princess/sorcerer and a Mok (a Wookie) are his companions.
The Littles - may as well call it the MacGuyvers. They could build anything out of cardboard, rubber bands and buttons. Including aircraft.
Muppet Babies - every episode was different, but the better ones were movie themed versions where the muppets would act out various roles. Idea for it came from the movie "The Muppets Take Manhattan"
Smurfs - little blue dudes from a magical forest. I preferred the original narration intro over the shortened doom & gloom intro.
Fat Albert - This taught kids the dangers of urban life, and is still somewhat relevant today. Some of the stereotypes are not-so-nice, and we've recently discovered that the main star was into helpless women, and therefore you'll likely never see this show anywhere.