Norm Peterson, played by George Wendt, was a regular at the Boston bar in Cheers, the American sitcom that ran from 1982 to 1993. Almost every time he entered, the staff and regulars greeted him with a loud chorus of his name, turning a simple hello into one of television's most famous running gags. Clips of that greeting spread online as a short, instantly recognisable reaction sound, and creators still use it because it needs no explanation: the shout alone tells viewers that a familiar face has arrived.