People everywhere know "It's the Great Pumpkin, Charlie Brown", and consider it one of the best. But they consider it one of the best not because it is the best, but because they've only seen two Peanuts specials, the other being "A Charlie Brown Christmas". Those two are the most famous. Are they the most famous because they are the best? No. They are the most famous only because they are for the biggest holidays.
That being said, this is a very delightful show. The storyline is a little weak, but there is so much about it that makes that a minor detail. It is a very colorful show, with all sorts of reds and oranges and purples. The cel animation is ten times better than today's CGI. There are a few amusing moments. And Vince Guaraldi's whimsical jazz is accompanied by woodwinds, making the "Great Pumpkin Waltz" and "Linus and Lucy" very pleasing to the ears. If you don't like the story, just watch it for the music and animation.
Everyone ought to see this at least once.