After seeing the Popular GIS slideshow, I decided to submit American Stereography #3 for consideration as the best visual illusion of the year contest. Every single person that has placed in the top 10 in the prior 3 years has a university attached to their name. Maybe 2008 will be different? I hope it will.
Techincally what I submitted today should be called American Stereography #4, because I modified the HTML to add a hit counter (see who looks at it) and added SMALL, MEDIUM, and LARGE options to adjust the sizes of the images. I found it easier to have my eyes align with smaller images. This adjustment scales the total number of viewing combinations to a little over 150,000.