Justin Timberlake

When life as a beach-hopping Cameron Diaz canoodler just isn't generating the grist for ye olde creative mill, where does America 's flyest white boy turn? Back to Britney, of course. With its darkly devastated break-up narrative, Futuresex's third single sure sounds like "Cry Me a River" redux, despite Mr. JT's protests to the contrary. But even if you don't quite buy the sentiment, the sound -- a choice little Middle Eastern oud sample and Justin's kicked puppy tenor -- sells the song.