Katy Perry beams up the sci-fi video for “E.T.,” the fourth No. 1 single off her Teenage Dream album. Directed by Floria Sigismondi (Christina Aguilera, Marilyn Manson), the pop singer stars as an alien princess who finds love on Earth. Kanye West lends .... his supernatural talents, floating through space as he raps about extraterrestrial relations. Take a journey into a galaxy far, far away in the out-of-this-world clip and look for the twist at the end.