Stuff You Should Know is one of my favorite regular podcasts. The latest one was especially good - How Muppets Work.
There are things you assume would have been discovered or invented eventually. If Bell didn't give us the phone, someone would have. But for the imagination and creativity of art, the vision may only have one conduit into this world. We wouldn't want to live in a world where Jim Henson had become an accountant instead of being the creator of the Muppets.