Oh, Britney Spears. Britney, Britney, Britney... She's been a lodestar of pop sexuality across two millennia, and we hope she never, ever goes away. Through her many ups and occasional downs, one thing has remained constant: from "Baby One More Time" to "Slave 4 U" to "Toxic" to "Womanizer" to "Private Show," the girl knows how to create a provocative, titillating video. Here's to, Britney Jean -- we are in awe.