Today is the 20th anniversary of the "Seinfeld" series finale, watched by more than 74 million people on May 14, 1998.
The final episode of "Seinfeld" is the 4th most watched TV show of all time. The "M*A*S*H* finale remains number one, with the last episode of "Cheers" second and the "Who Shot J.R." episode of "Dallas" the 3rd most watched.
The Seinfeld theme music is one of the most recognizable TV theme songs ever. But did you know that it had lyrics? The first episode of the 3rd season of "Seinfeld," which aired on September 18, 1991 was the first and only time the open with lyrics was featured. It has female backup singers performing some "scat" lyrics. NBC and Castle Rock were not made aware of the change, and the theme quickly returned to the original.