From 1972.This is Pedro(Luis Avalos), from the super-kickass 1970’s show The Electric Company with Maurice, the Guard Plant(voiced by Jim Boyd). Here, they are doing what’s called the “Soft Shoe Silhouettes”, forming words together. I bet you’ll remember it once you see it.
Maurice usually speaks in a gibberish style “plant talk”, which I always found hilarious. However, in his first appearance, he did speak actual words:
Also, check out the lovely and talented Rita Moreno in this clip!