An old adage when writing research papers is “put it in a figure”. If there is one thing that I want the reader to know when they put my paper down, then I try to put it in a beautiful figure, with a complete explanation in the caption. I saw the extension of this rule to talks recently, and I’m going to try it out myself: if there is one thing you want your audience to remember when they leave your talk, put it in a movie.
Here is the movie that taught me this lesson:
And here is a blog post by one of the video creators, to tell you more about what you’re seeing.
Healthy Algorithms 
The subject of that video is also the topic of many letters in last week’s Lancet: http://www.thelancet.com/journals/lancet/article/PIIS0140-6736(11)61806-0/fulltext is a response to responses to a recent article.