John Robert Crichton, Jr. , played by Ben Browder, is an International Aeronautics and Space Administration (most commonly referred to on the show as IASA) astronaut who, in the opening few minutes of the pilot episode, is accidentally catapulted through a wormhole across the universe, thus; setting the scene for the show as a whole. As the only regularly appearing human on the show, he is the main focus and is the main character as he narrates the weekly credits and is the only character to appear in every episode. Along with Michael Shanks' character of Daniel Jackson in "Stargate SG-1", Browder's Crichton has been called one of the sexiest male characters in science fiction.