If you watch the images below 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 5-6 feet, and PRESTO!! they switch places!!
This illusion is believed to have been created by Phillippe G.Schyns and Aude Oliva of the Univ. of Glasgow. This proves that we may not be seeing what's actually there, all the time!!