This quote comes from Obi-Wan Kenobi in Star Wars: Episode III – Revenge of the Sith, released in 2005, with the line spoken by Ewan McGregor. Online, the clip became a long-running meme because the simple greeting sounds oddly bold and cinematic in context. It spread widely in reaction videos, image macros and short edits, often used for entrances or reveals. It still stays popular because even people who only half know the scene usually recognize the setup and the joke immediately.