Jason Alexander, American actor, singer, and voice artist

Jay Scott Greenspan, known professionally as Jason Alexander, is an American actor and comedian. Over the course of his career he has received an Emmy Award and a Tony Award as well as nominations for four Golden Globe Awards. He gained stardom for his role as George Costanza in the NBC sitcom Seinfeld (1989–1998), for which he won a Screen Actors Guild Award for Outstanding Performance by a Male Actor in a Comedy Series and was nominated for seven consecutive Primetime Emmy Awards for Outstanding Supporting Actor in a Comedy Series and four Golden Globe Awards for Best Supporting Actor in Television.

September 23 is the 266th day of the year in the Gregorian calendar; 99 days remain until the end of the year.