Even the worst video games ever made can make for a good TAS.
The Cheetahmen is game #52 in Action 52, probably the most infamous multi-game cartridge released for the NES. The story goes that the "Action Gamemaster" (i.e. some guy) was playing his video game when three Teenage Mutant Ninja Turtle ripoffs pull him through the TV and into their world. They tell him that there are enemies in their world and then leave him behind to fight the enemies.