I spent a lot of my childhood in front of the telly. As soon as I got home from school, it'd be straight to BBC One for a couple of hours of Children's BBC until that hit the impassable Newsround barrier, then catch up on the last couple of hours of Children's ITV thanks to the magic of home video. No difficult Sophie's Choice dilemma in the Warburton household (plus, that way around you could fast-forward the adverts).
But this was the late '80s / early '90s and children's TV wasn't on around the clock, so I also had a healthy supply of commercial videos to tide me over. Typically, these collected two arbitrary episodes of a popular animated series that would embed themselves in my memory through repeated viewings to the extent that I could still probably recite the scripts verbatim 25 years later ("planetary alignments come and go, but pizza is forever" etc). But sometimes, they'd be a bit stranger.
These underdog videos didn't have the budgets of Hollywood animation studios. Some of their origins are uncertain. Most of them have been preserved for undeserved posterity on YouTube.