Alexander's Broadway roots include a Tony Award for Best Actor in a Musical for Jerome Robbins' Broadway in 1989 A video of Alexander singing "I Want To Sing A Show Tune" and "This Is The Moment" on ...

Before he made a name for himself on television as George Costanza on Seinfeld, Jason Alexander found his roots in Broadway — and a resurfaced performance is causing fans to do a double-take. A video ...