While I'll gladly admit that I haven't tuned into PBS for. . . more years than I'd like to count, I'm also not against admitting that some of their programming is undeniably fascinating. The above relatively short documentary I discovered a few months ago briefly introduces the layman to the history of the logo, starting with man's (. . .or woman's, I don't want to be a sexist hater) earliest cave wall illustrations to samples and techniques of modern design. Did you know that any given logo often has dozens, if not more, or alternative and unused versions? Watch the video. Learn something, and make me proud.