Order 66 comes from Star Wars: Episode III – Revenge of the Sith, released in 2005, when Emperor Palpatine secretly commands the clone army to destroy the Jedi Order. The scene became one of the saga's most quoted turning points, and clips of the command spread through fan edits and meme soundboards as shorthand for a sudden, coordinated betrayal. It remains popular because the moment is instantly recognisable even to casual viewers, and it pairs naturally with other Star Wars audio such as Roger Roger for clone-centred edits.