What I find really great about The Muppet Show and the Muppets in general is that they were both fresh and edgy while still being wholesome and good for the whole family. I get that feeling with many sitcoms from the 50s, 60s, and 70s especially. The 80s and 90s were good also enjoyable in a way that you wouldn't feel too embarrassed watching them in front of a kid. But most things I see today are reflective of our values (or lack thereof) today.
Media of today really seems to glorify all the wrong things. While this doesn't hold true in everything, movies and tv shows of today would rather take advantage of fart jokes and juvenile humor just to get a cheap laugh rather than attempting to write genuine humor. I'm not saying this humor didn't exist before, but there is a lack of quality to balance it out. And perhaps it dwells from my love of classic rock and oldies and beach music that I inherited from my parents, but I feel as though music of today is nothing to be desired.
We are a celebrity obsessed society and it is inevitable that some people will look to them as a meter for their own lives. And for the most part, celebrities of today are horrible role models. Seeing pictures of athletes using drugs and rail-thin models being deemed "too heavy" is sending all the wrong messages to the youth of the world.
Overall, I think entertainment... from film and television to music... is nothing like it used to be. There are plenty of good spots, of course. Advances in technology have been abundant over the past few decades, and that's nothing to put down. But there's something to be said about the old fashioned way. Sure it could be done in CG, but I think a film like The Dark Crystal is an example of art, pure and simple, for the environment building alone. And those sets were created without CGI.