Jason Alexander Video | Celebrity Interview and Paparazzi

Jason Scott Greenspan (born September 23, 1959), better known by his professional name of Jason Alexander, is an American actor, director, producer, writer, singer, and comedian. He is best known for his role as George Costanza on Seinfeld, appearing from 1989 to 1998. He also has had 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... MORE

Jason Scott Greenspan (born September 23, 1959), better known by his professional name of Jason Alexander, is an American actor, director, producer, writer, singer, and comedian. He is best known for his role as George Costanza on Seinfeld, appearing from 1989 to 1998. He also has had 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. Alexander was born Jay Scott Greenspan in Newark, New Jersey, the son of Jewish parents Ruth Minnie (née Simon), a nurse and health care administrator, and Alexander B. Greenspan, an accounting manager. He has a half-sister, Karen Van Horn, and a half-brother, Michael Greenspan. Alexander grew up in Livingston, New Jersey and is a 1977 graduate of Livingston High School. Alexander had a very wheezy voice growing up, primarily because of his asthma. He attended Boston University but left the summer LESS