When you have a couple of hours to spare, please spare yourself the time to learn (or re-learn) your history of television. Who knows? It might come in handy the next time our world sees a sea-change in technology. Like. Oh. Say when the Internet becomes the medium and the message and the medium that delivers the message.

Johnny Carson was the king of late-night TV, but he also was human. He was a man. Watch and learn, kids. Watch, and learn.

Johnny Carson: King of Late Night