Many years ago
A friend, sadly no-longer with us, had a nervous breakdown whilst doing his degree - as part of his rehabilitation he was given some work in the medical sciences research bit of the nearby hospital (some of you may know a city has the mental hospital adjacent to a medical research campus). He was a bright guy but unfortunately had a compulsion to set knobs to zero, which was unhelpful.
As an attempt to cure him of this a bit of fake equipment was rigged up with a large enticing dial on it [this was in the 70s which explains a lot], set so that when it was zeroed, an enormous capacitor would explode. Apparently he covered the 10 metres to the door in a world record time.