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Jason Alexander turns 53 on Sept. 23, 2012. The actor is known for his work as George Costanza in the popular '90s television show 'Seinfeld,' as well as guest appearances in shows such as 'Criminal Minds.'
Pictured: Jason Alexander addresses the crowd before an onstage discussion between Israeli President Shimon Peres and journalist Campbell Brown at the Beverly Hilton Hotel in Beverly Hills, California on Thursday, March 8, 2012.
(AP Photo / Chris Pizzello)