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Nightmare Fuel: Aphex Twin
I...WANT YOUR SOUUUUUUUL
Come to Daddy — elderly lady is harassed by children, each one of their faces replaced by the identical grinning visage of Richard D. James, whilst a distorted face on a TV howls about how he wants your soul. It gets worse from then on in.
Once described by Dave Grohl as "the most terrifying music video ever."