Mid-Century Sesame Street

As someone who watches more Sesame Street than he should (otherwise know as the same amount as other fathers), I'm starting to remember all the crazy things that were on the Street when I was young. I don't specifically remember this Philip Glass segment, but the new mid-century enthusiast in me loves it (even if it did air in the '70s).

However, the greatest Sesame Street segment is and always will be, How Crayons Are Made.