Am told there is a revival of The Electric Company on PBS.
I'll be sure to check it out, but I doubt it's as good as the original. That show, which ran from 1971 to 1977 on PBS (and then in repeats until 1985), featured the considerable talents of Morgan Freeman, Rita Moreno (both above, and in today's clip), Bill Cosby, Jim Boyd, Judy Graubart (a sort of Gilda Radner for the pre-school set), and many others including Joan Rivers, Mel Brooks, Gene Wilder, and Tom Lehrer all contributing material.
Even big names like Carol Burnett, Rowan and Martin, and Lily Tomlin would sometimes drop by. In fact, once you got the obligatory phonics lessons out of the way - the show seemed somewhat like a light-hearted version of a prime-time sketch comedy for kids.
There's more information about the original here.