Which TV show's finale was the most watched in history?

If there's one episode out of any TV show's run that probably never gets rewatched, it's the finale. I mean, sure everyone watches the finale when it airs, but once things are in syndication, reliving the end just isn't that appealing. Unless you enjoy pain, in which case, hey do your thing.

It's hard to imagine in today's streaming world, but there was a time when the Super Bowl wasn't the only telecast family and friends would gather to watch live. Hell, people would get together on Saturday nights just to watch a regular episode of The Golden Girls, so when a finale for a big show was coming, it was essentially pandemonium.

Several TV finales seemingly shut the country down as we dialed in to find out how it would all go down, and it seems unlikely this record could ever fall in today's television landscape. Which show had the most-watched finale in history?