The Best Illusion Ever Created?
     
If you watch the above images from your seat in front of the computer,
Mr. Angry is on the left, and Mrs. Calm is on the right.
     
Get up from your seat, and move back 12 feet, and PRESTO!! they switch
places!!
     
This illusion was created by Dr. Aude Oliva of MIT and Dr. Philippe G.
Schyns of the University of Glasgow. It is based on a property (which
one?) of the HVS described in Chapter 2 of the Lecture Notes.