Thomas Papathomas' Hollow Body and Mask Illusion 4th at the 2012 BIOTY Contest

You can read more about it and other illusions on the BIOTY web site - http://illusioncontest.neuralcorrelate.com/cat/2012/. The New Scientist also has an online article on it - http://www.newscientist.com/blogs/nstv/2012/05/best-illusions-of-2012-the-exorcist-illusion.html.

 

You can see it at http://www.youtube.com/watch?v=Lg3mbgjDgXc. If you forget, just visit YouTube and type "Exorcist Illusion".