The line comes from Chancellor Palpatine, later Emperor Palpatine, in Star Wars: Episode III – Revenge of the Sith, released in 2005. During his confrontation with Mace Windu, Palpatine shouts 'Unlimited power' while blasting Force lightning. The scene became widely clipped and remixed online because the performance is so intense and theatrical. It remains popular in meme culture for videos about power trips, ridiculous upgrades, and exaggerated villain energy, often alongside other dramatic Star Wars reaction sounds like Darth Vader NOOOOOOOOO!.