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Laughology is a 2009 documentary film about the contagiousness of human laughter by Canadian filmmaker and Laughologist Albert Nerenberg. It is the first feature-length documentary about laughter. The documentary makes the case that laughter is the original peace signal and the human ability to share and transmit laughter may have been key to the rise of human civilization. The film chronicles unusual laughter phenomenon such as Holy Laughter, Laughter Parties and the Tanzanian Laughter Epidemic. The film is produced by Elevator Films which operates out of Lac Brome, Quebec, and Cache Film and Television. The film made its world premiere at HotDocs Film Festival in Toronto.