Penn & Teller are an American comedy-magician duo who have been performing together since the late 1970s. They are best known for their television show, Penn & Teller: Fool Us, which has been airing since 2011. The duo is composed of Penn Jillette and Teller, who are both accomplished magicians and entertainers. Penn & Teller have been credited with revolutionizing the genre of magic by combining comedy and showmanship with their illusions.