Microphone gaffe, when something is broadcast over a microphone by mistake
Australian Open | French Open | Open University | open source | U.S. Open | Wacken Open Air | The Open Championship | U.S. Open (tennis) | All England Open Badminton Championships | U.S. Open (golf) | Open Source | Open-pit mining | 2006 Australian Open | Open Software Foundation | Indira Gandhi National Open University | Lamar Hunt U.S. Open Cup | 2005 Australian Open – Men's Singles | U.S. Women's Open | open access | Gerry Weber Open | Swedish Open | International GT Open | Federal Open Market Committee | 2014 Australian Open – Men's Singles | 2008 Australian Open – Men's Singles#Finals | WTA German Open | U.S. Open Polo Championship | U.S. Open Badminton Championships | St. Petersburg Open | Open Water Diver |
In July 2010 Deal, Councilor Tim Stevenson, and Mayor Gregor Robertson were caught on an open microphone mocking and laughing at public speakers at a council session who had called for greater transparency in the selection of a 12-person committee that will advise council on rezoning.