Hi poohbear10204. Like you, I am raising a young child, and I'm introducing him to vintage Sesame Street and The Muppet Show, courtesy of the somewhat expensive DVD sets. So there's that, if you can afford it, but also many individual sketches and numbers are posted on Youtube and the Sesame Workshop site. Not quite as nice as having it on TV, unless you use a feed from your computer into a large screen TV, but still possible.
I agree that children should grow up with The Muppets. Even Alice Cooper is OK for a 3 year old, in my opinion.