Famous or fame-ish?
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Jonas Brothers( Kevin Winter / Getty Images )
The Jonas Brothers
Why we know them: The teen-pop superstars became an overnight sensation after guest-starring in Miley Cyrus' "Hannah Montana," and then opening for her on her 2008 tour. They went on to appear in Disney's " Camp Rock," land the television series "J.O.N.A.S.," score a top-10 album and receive a nomination for best new artist at the Grammy Awards. Despite Nick's solo music project Nick Jonas and the Administration and Kevin's marriage to his girlfriend Danielle in December, the boy band remains together as a force in the business.
-- Todd Martens