Toxic - Britney Spears (2003)
As a wiser man than me once said, this is "The only Britney that matters". While that may not be completely true (I think I could round up a decent top five for her), it is the greatest thing she ever put to wax (or to computer space, or whatever recording engineers put music to these days). Produced by pop masterminds Bloodshy & Avant, it sizzles with Bollywood undertones, bubbling along with robotic coldness, enveloping the listener in a silicone world. If ever there was a song made for Daryl Hannah's character to sing in Blade Runner, this would be it. No wonder Britney played a fembot in the Austin Powers films.
What a fabulous chanteuse version!