Warning: this will scare the shit out of you

This is a nightmare on video, and I don't know why I have to keep going back and watching it over and over again, because it still SCARES THE SHIT OUT OF ME even though I know it's "nothing". It's really nothing, and a couple of decades ago it was something so familiar, you experienced it every day without thinking about it. Except now, it has been impossibly attenuated into an expression of doom so potent that it can make you lose all hope. So hey, why not watch this right now? Turn the volume WAY up.