Jason Alexander

ABOUT JASON ALEXANDER

Longtime actor best known for his role as George Costanza on the popular television show Seinfeld . He's also had roles in a number of films including Shallow Hal , Dunston Checks In and Coneheads. As a stage actor, he won a Tony Award for Best Lead Actor in a Musical for his work in Jerome Robbins ' Broadway in 1989.

His was born with the name Jason Greenspan but changed his name to aid his acting career.

He's made appearances in a number of television shows including Friends , Monk , Malcolm in the Middle and Curb Your Enthusiasm .

He married Daena E. Title in 1982 and the couple had two sons.

He was one of the four core actors on Seinfeld alongside Jerry Seinfeld , Julia Louis-Dreyfus and Michael Richards .