This specific episode of Seinfeld changed the entire dynamic of the show and the characters, according to the cast and crew.

Jerry Seinfeld was right: the episode is a masterpiece, not just for its authentic New York backdrops, but for the way it broke the mold of what a sitcom could be.

This week the New York Yankees announced that the bobblehead giveaway for its Seinfeld Night promotion on Aug. 21 for its game against the Boston Red Sox will be one of George Costanza sleeping ...