Jason Alexander is an American actor, comedian and singer. He is best known for his role as George Costanza on the television series Seinfeld, appearing in the sitcom from (1989-1998). He has been featured in the hit televison shows Community, American Dad, Two and a Half Men, and Curb Your Enthusiasm. Along with his many film and televison roles he also has an active career on the stage, appearing in several Broadway musicals including Jerome Robbins' Broadway in 1989, for which he won the Tony Award as Best Actor in a Musical. He appeared in the Los Angeles production of The Producers with Martin Short. He is the Artistic Director of Reprise! Broadway's Best in Los Angeles, where he has directed several musicals. Alexander is also an avid poker player.