A video adapted from Randall Munroe’s Thing Explainer, where complex subjects are explained “using only drawings and a vocabulary of the 1,000 (or ‘ten hundred’) most common words.” I believe this all started with the XKCD cartoon Up Goer Five, “the only flying space car that’s taken anyone to another world.”
I love this part at the end of the video.
You can find Thing Explainer at book stores, or by using your computer to search the place where computers think together.
See also: Time Magazine’s interview with Munroe, where his responses are all stick figure drawings. And also the MinutePhysics YouTube channel.