Becaue of MM, I can't stop thinking about the Cat in the Hat Special from 1971. Anyone who has love for cartoons understands that animation is a special form of storytelling that can't be matched by live action, (with rare exceptions).
As I've mentioned many times over the years, DePattie-Freleng locked arms with NBC and ran with the "Pink Panther" series during the 1960's Saturday morning Superhero Revolution. Both got left in the dust.
DePattie-Freleng, (DPE) & NBC never came up with a lasting SatAM hit, but DPE were masters when it came to animated specials. Dr. Seuss was a natural fit and to give their effort an extra coat of polish, DPE teamed up with their old friend Chuck Jones to make an exceptional animated presentation!