With 376 pages now of posts, and I've only just recently joined I'm not too sure if anyone else has noted this one. Typically, in horror movies, in a hallway or a tunnel etc where there is lighting running along the length of these on the roof or walls. When the lighting is progressively turned off/on, the lighting makes this loud clunk sound like someone is throwing a large circuit breaker as each light individually turns off/on. Typically, if you turn off the lights they all go out at once, not each one progressively turning off/on. Does anyone know where this would actually happen?