Groovy 1977 PBS signoff clip (Athens, Ohio)

Aficionados of all things retro @serafinowicz and @robertpopper point us to this great signoff reel (a compilation of four clips) from PBS station WOUB in Athens, Ohio, circa 1977. I remember going to a couple of TV stations around that time as a child and being blown away by how high-tech everything was. I like thinking about how much idealistic folks like these shaped my childhood. Video link.