The quantified self from a distance...
Fricking AMAZING: Eulerian Video Magnification for Revealing Subtle Changes in the World http://people.csail.mit.edu/mrub/vidmag/
From four frames of video, highlight someone's pulse. (Obviously, only one of many apps.) via +Nat Torkington
's always fabulous "Four Short Links" column on radar.oreilly.com
This right after I saw a pop piece about a laser being used to detect from your skin color whether you'd been eating your vegetables.. http://t.co/qSz0IQbZ
And of course, a few months ago, Tommy Poggio at the McGovern Institute for Brain Science told me how he is using computer vision to detect signs of depression in laboratory mice. (One of his colleagues is developing gene therapy for depression, and needed a better way to watch the mice to see if it is working.)