For me it is This House Has People In It. There was a channel, I think it was Nexpo, that made a full hour video analysis on it and I'm still amazed by how much depth this has and how much effort went into it.
I didn't know for years that this is an episode of a show called Infomercials which you can watch on Max. The first 5 or so episodes are spoofs of actual infomercials, but then it goes off the wall with episodes like this one. Highly recommended!
Whoa, neat! Apparently they sometimes show up just as blank spots on the Adult Swim TV guide, which I remember seeing in the past but had no idea what it meant.
They even have a Wikipedia page: https://en.wikipedia.org/wiki/Infomercials_(TV_specials)