Chromecast Hack Lets You Rickroll Your Neighbor’s TV

The Rickmote Controller works by sending the Chromecast a command that temporarily kicks the dongle off of its Wi-Fi network. Once disconnected, the Chromecast will automatically revert to setup mode, which turns the dongle into a Wi-Fi hotspot; this allows the Rickmote Controller to connect to the Chromecast, and endlessly stream Rick Astley‘s greatest hit. – Karissa Bell,Mashable