If you are interested in optical illusions, have a look at this video from TED talks.
The presenter is Beau Lotto. Beau is a neuroscientist and an artist who has a studio called Lottolab where he combines art with science.
In this video, he shows us how the brain plays tricks on us.
Have a look…
For more information about Beau Lotto have a look at his profile on the TED website here.
The URL is: http://www.ted.com/speakers/beau_lotto.html