https://www.cnet.com/news/google-doodle-pays-tribute-to-everyones-friend-mister-rogers/

Like the opening of hundreds of Mister Rogers episodes, the Doodle begins with a group of young children gathered around the TV, watching as a trolley transverses a model of Mister Rogers' neighborhood. In a claymation presentation reminiscent of another 1960s children's show, Davey and Goliath, Mister Rogers greets friends along the way with smiles and invitations to educational adventure.

Through the magic of a fairly nascent technology called television, he took preschool-age children on factory tours, met with people in the neighborhood to talk about their jobs, and even a visited the set of the TV show The Incredible Hulk (Disclosure: The Hulk appeared on CBS, which owns CNET.)