Jerry Seinfeld was a stand-up comic.
Jerry Seinfeld . He is known for playing a semifictional version of himself in the sitcom Seinfeld , which he created and wrote with Larry David . In his stand-up comedy career , Seinfeld is known for specializing in observational comedy , often ranting about relationships and embarrassing social situations . In 2005 , Comedy Central named Seinfeld their `` 12th Greatest Stand-up Comedian of All Time '' . Jerry Seinfeld (character) . Jerry is the only main character on the show to maintain the same career ( a stand-up comedian , like the real Seinfeld ) throughout the series .