Tara McNamara

Marketplace

The Jonas Brothers

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One year ago, only parents of Radio Disney-addicted children had heard of the Jonas Brothers. Today, 20-year-old Kevin, 19-year-old Joe and 16-year-old Nick Jonas are the epicenter of pop culture.

Jesse McCartney

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Jesse McCartney disappeared just as his career was cresting. It turned out to be a brilliant move -- as a result, the singer, songwriter and actor is now having one of the biggest years of his career.

Doug Cohn

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When Nickelodeon hired former VH1 and Atlantic Records exec Doug Cohn to integrate music into the Nick brand, SpongeBob SquarePants wasn't the only one crooning, "It's the best day ever!"

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