In which the usually happy-go-lucky Katy Perry subverts her status as pop's eccentric prom queen by going a little darker, more mature, and, we're not afraid to reaffirm it: alien. Whiffs of t.A.T.u. and a diet version of Nine Inch Nails lace the crawling, industrial-laced production, making its otherwordly success somewhat a surprise. But kudos to its video's fantastical sci-fi extravagance, which feels particularly imperious during an era of spartan promotional budgets. Directed by the avant-gardist Floria Sigismondi (known for Japonais-themed videos with Christina Aguilera, Girls Aloud, Marilyn Manson, and The White Stripes), it's an Avatar level spectacle, with the requisite cyberkinetic style attributes. Thanks to some excellent makeup by artist Kabuki, Perry resembles Na'Vi as Betty Page. Costume designer and stylist Carol Beadle was responsible for her meteoric ensembles, as well as Kanye West's, who guest appears in the video. MTV awarded the video heavy attention, nominating it for five VMAs, where it won Best Collaboration.