In 1998 he went on tour and recorded a comedy special, titled I'm Telling You for the Last Time.
The process of developing and performing new material at clubs around the world was chronicled in a 2002 documentary, Comedian, which also featured fellow comic Orny Adams and was directed by Christian Charles.
The final episode aired in 1998, and the show has been a popular syndicated re-run.
Along with Seinfeld, the show starred Saturday Night Live veteran Julia Louis-Dreyfus and experienced actors Michael Richards and Jason Alexander.
The webisodes were directed by Barry Levinson and aired briefly on television.
Seinfeld and "Superman" were also interviewed by Matt Lauer in a specially recorded interview for the Today show.
They were cut from television after just three installments; Microsoft opted to continue with the "I'm a PC" advertisements In March 2009, it was announced that Seinfeld and the entire cast of Seinfeld would be appearing for a reunion in Larry David's HBO series Curb Your Enthusiasm.
He is the creator and host of the web series Comedians in Cars Getting Coffee.
Seinfeld appeared on open mic nights at Budd Friedman's Improv Club while attending Queens College.
The show was later renamed Seinfeld to avoid confusion with the short-lived teen sitcom The Marshall Chronicles.
By its fourth season, it had become the most popular and successful sitcom on American television.