The new world of what we once called "television" is still sorting itself out, and it's a multi-front battle. Content needs to be both appealing and discoverable (hence, the draw of an iconic series like Sesame Street).
Was I really enhancing my canvas with a known quantity that was adding inherent value to my film negative or was I polluting artwork, and by extension its message, with a celebrity whose presence in the film was more important than the film itself?
Kids already spend lots of time with YouTube, and it's become not only a top entertainment destination, but a key contributor to their learning. Increasingly, young people look for visual demonstrations to answer questions.
Once upon a time, some iconoclastic comic actors and wildly original writers were assembled to copy a hit TV show's style, and despite format limits, managed to distinguish themselves in bleeding edge ways.