Jason Alexander once threatened to call it quits on Seinfeld after feeling robbed, according to his co-star Michael Richards. Richards revealed in his upcoming memoir that Alexander thought his ...

Alexander, of course, shares a name with acting legend Jason Alexander, who is most famous for playing George Costanza on “Seinfeld ... and Boston Red Sox organizations.

Jason Alexander may always be best known as George Costanza on Seinfeld. While the '90s sitcom is considered one of the most profitable TV shows of all times, Costanza and his supporting co-stars ...

Jason Alexander is best known for playing George Costanza on the hit sitcom Seinfeld, but his proudest ... he has made several appearances on the red carpet with his family. Most notably, he ...

Jason Alexander chats with ET's Denny Directo at the Los Angeles premiere of 'The Electric State,' streaming March 14 on Netflix. 'Seinfeld' turns 35! ET celebrates the long-running sitcom with on ...