One of my favorite shows ever is Community. It is an ensemble comedy that comments on the modern state of TV culture and I think they do an excellent job of developing characters and telling stories. Dan Harmon, the creator of the show, uses a concept called the story circle that has changed the way I view all television and movies. On top of that, further research into the story circle has influenced my understanding of storytelling in general, even as it pertains to my professional career in fields like user experience design, marketing, branding, and data analysis. All of this research and knowledge has stemmed from watching this show.
Also, I think Avatar the Last Airbender is one of the best shows for children of any age!