There is not one single show on any channel that I miss more than Mystery Science Theater 3000. It's been perhaps 10 years since it was on? It was inventive, sarcastic and above all, damn funny. It was not really mean or mean-spirited. It did not attack or debase anyone. It simply made fun of movies the same way any one of us would. If, say, we were forced to watch bad 50's movies with a couple of our quick-witted smart ass friends. Or with a couple of robots.
I don't know if I would watch it with my child, but truly, there isn't any comedic show now that I could/should/would show him. At least he would enjoy Tom Servo and Crow. And I know he would laugh at the right moments. Even if he didn't get the joke, he would get the punchline.