My friend recently scored some DVDs of The Muppet Show.
Sure enough, we all gathered at his house and watched some classic episodes.
As a child, I was too young to appreciate the show's humour and it's homage to vaudeville. Many years later, I get a second chance. What's unique about this show was that the characters were geared towards children; while the comedy was geared towards adults.
Here's a perfect example:
*It's time to start the music: Episode 64 of the Audio Circus*