Mr. Rogers was my second favorite character on TV (behind Grover) when I was growing up, and several months ago I found the old "How People Make Things" factory videos on the PBS website. My boys LOVE them!
During the Sneakers video, I spent five minutes of circular conversation trying to explain to my kids that sneakers are shoes. Maybe this is a regional term.
By the way, have you seen Autotune Mr. Rogers? It will make you smile all day.