Cheers celebrates its 25th anniversary today. Without it, we wouldn't have gotten Frasier. We could've but we wouldn't have seen the Boston back story. Here's to you by giving us the best characters in TV history. Plus, a relationship that everyone keeps trying to top and hasn't succeeded. What? You didn't know everyone wants to copy Sam and Diane? They do. So watch an episode today on your DVD player or VCR. Why? Because TV Land isn't celebrating it.