Some of my faves. [spoiler][img]http://www.scaryforkids.com/pics/optical-illusions-02-big.jpg[/img][/spoiler] [spoiler][img]http://bp3.blogger.com/_Q8p6JEMW_so/R8TWgfh0E8I/AAAAAAAAAf0/px4EaaQmEYQ/s1600/purple-nurple.png[/img][/spoiler] [spoiler][img]http://www.eyetricks.com/rotatingdots.gif[/img] However, if you stare at the black + in the center, the moving dot will turn green. Keep concentrating on the black + in the center of the picture. After a short period, all the pink dots will slowly disappear and you will only see a single green dot moving in a circle.[/spoiler]