Parodied as "It's A Horrible Life," with B&B's guardian angel Charlie coming to take away their lives. He shows Butt-Head what Highland would have been like if he and Beavis had never met. They eventually throw Charlie into the river.
In Beavis' dream of future Burger World, all the customers are wearing uniforms like those worn by the characters on Star Trek: TNG. Also, when Beavis blows away the walls, it appears that they are on Mars.