As long as we're talking about Tron today:
Brilliant! (h/t Cartoon Brew.) And as long as we're on the subject of Chaplin, here's an entire sequence from Modern Times, the Nonsense Song. In case you can't tell from the tiny video size: he wrote the lyrics on his shirt cuffs, which leads to the perfect sight gag at :12.
In case you don't know, that's Paulette Goddard, one of most beautiful woman to ever appear in movies. Matter of taste, I suppose, but she's something else in this movie, and would have made a great Scarlett. Didn't happen. She was close, but didn't get it. As this fellow says:
Yep. Fun fact: she was married for a while . . . to this guy.
