This has been on before but I can't find it, so...
This is an illusion that has been around for a while, but never ceases to fascinate. Relax and concentrate on the four small dots in the middle of the picture for about 30 to 40 seconds. Then take a look at a wall near you, or any smooth, single colored surface. You will see a circle of light form. Blink your eyes a couple of times and a figure will begin to emerge.
What do you see?
