Courtesy of Platypus Comix.
This is one of those X-Entertainment-ish pages I check every so often. There's a pretty good thing about the Donkey Kong portion of the show and the promise to cover DK Jr. next week. You can even watch the 'toon at the bottom of the page.
FYI, there must have been only one episode of Saturday Supercade that has turned up because it's always this one anytime someone does a feature on the show. It's not terribly difficult to turn up in the trading circles and is actually part of a longer tape that IIRC starts with Charlie Brown and ends with Dungeons & Dragons.