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Spinning Wheel Illusion!!

Maniac World: "Stare at one of the 5 wheels. It will appear to be motionless but...

 

...the other four will seem as though they are turning.  Whichever one you stare at will appear to suddenly stop spinning.  In reality - none of the wheels are turning at all."

 

http://www.maniacworld.com/spinning-wheel-illusion.html