I looked it up a little, pretty cool what people do, thanks for pointing me towards that. Found a cool website explaining the different disciplines: https://glitchology.com/

I remember seeing a video a long time back where someone powered an NES from batteries and showed how it shut off, not instantly, but gradually. It was straight from a creepy pasta. I found the video again: https://m.youtube.com/watch?v=zTqcb8hl8YI&t=10m18s