One of the surviving episodes of Sam and Friends.
Muppets: Kermit, Harry the Hipster.
Description: In this classic mix of puppetry and animation, Harry demonstrates the art of Visual Thinking to Kermit; and what it does to you once it gets out of control.
This is one of the most well known Sam and Friends scenes that shows up in most documentaries.
A later version of this skit was performed in 1968 on The Ed Sullivan Show, with Kermit as the hipster and Grump as the straight man. A 1971 episode of Sesame Street featured a similar scene about shapes.