Jeremy Piven

Born to the founders of a prestigious, Illinois-based acting school, this offbeat comic actor has made a scene-stealing career out of playing twits (the dean in Old School ), nuts (the title character in the short-lived dramedy Cupid ) and funny best friends (in Serendipity, starring his real-life buddy and frequent collaborator John Cusack). But though he's been a familiar face on the small and big screens since the late '80s, he didn't become a star until he took on the flashy role of a morally… Show more bankrupt agent in Entourage, a part that earned him multiple Emmy Awards. ~ Rovi

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