This is an animated stereogram made with Mathematica 7. The image on the left is slightly different form the image on the right. Viewing the video with cross-eyed view method allows gaining greater depth perception. To view the image cross your eyes until four images appear, then allow the images to converge to a set of three, focusing on the centre image. Read more about stereograms here: en.wikipedia.org/wiki/Stereogram .
The soundtrack is by “hisboyelroy” and can be found at: ccmixter.org/files/hisboyelroy/430 It is licensed under Creative Commons "Noncommercial Sampling Plus".