^Ultimate Slow motion: A group at MIT, the "Camera Culture
   group", have created a camera with a TRILLION frames per second
   speed. Here is why it is mind-blowing: When you look at yourself
   in the mirror, you don't see yourself "NOW', you see yourself as
   you were about a billionth of a second ago. With this camera,
   you can capture the light as it bounces from the LIGHT, to your
   FACE, to the MIRROR and back to your face. As you watch this
   video, especially notice what happens at 1:25: You can see the
   alien by itself, then you can watch the image of the alien in
   the mirrow SLOWLY APPEAR. What you think is instant is not
   instant at all.^