Optical Illusions Video (http://www.i-am-bored.com/bored_link.cfm?link_id=26905)
Amazing Optical Illusions (https://www.youtube.com/watch?v=xYe4-7I5ot0)
11 Mind-blowing Optical Illusions (https://www.youtube.com/watch?v=LcpliVYfEqk)
Japanese Math Professor Excellent Optical Illusionist (https://www.youtube.com/watch?v=Wx4yi5m8IfI)
7 Best Optical Illusions of All Time (https://www.youtube.com/watch?v=MYJkM4wfyZI)
A cool optical illusion (http://www.patmedia.net/marklevinson/cool/cool_illusion.html)
67 Optical Illusions (http://www.michaelbach.de/ot/)
Optical Illusions (http://members.lycos.co.uk/brisray/optill/oface5.htm)
Optical Illusions Animation (http://www.youtube.com/watch?v=WX_JfsWI8ds&mode=related&search=)
http://www.newopticalillusions.com/wp-content/uploads/2007/07/skull_illusions.jpg (http://www.newopticalillusions.com/wp-content/uploads/2007/07/skull_illusions.jpg)
http://www.newopticalillusions.com/wp-content/uploads/2007/07/skull_or_ghost_illusions.jpg (http://www.newopticalillusions.com/wp-content/uploads/2007/07/skull_or_ghost_illusions.jpg)
http://www.newopticalillusions.com/wp-content/uploads/2008/04/scary-optical-illusions-eyes.jpg (http://www.newopticalillusions.com/wp-content/uploads/2008/04/scary-optical-illusions-eyes.jpg)
http://media.log-in.ru/i/skull.jpg (http://media.log-in.ru/i/skull.jpg)
http://opticalillusion.files.wordpress.com/2007/12/skull-optical-illusion.gif (http://opticalillusion.files.wordpress.com/2007/12/skull-optical-illusion.gif)
http://brainden.com/images/orosz-skull.jpg (http://brainden.com/images/orosz-skull.jpg)