When Justin Bieber turned up behind the desk of the Daily Show last night, his presence immediately triggered some panicked questions from fans of regular host Jon Stewart: Was Jon out sick? Did Comedy Central unceremoniously replace him with the teen idol in the hope of getting bigger ratings?
Well, no. The answer was much weirder — Stewart and Bieber had magically traded bodies! But don’t worry: They switched back with the help of a magical skull.
February 03, 2011 – Admiral Michael Mullen [The Daily Show]