Magic Eye

Magic Eye (known "magiceye.jpg") is a shock site from 2002. It was submitted to Goatse.cx as part of "contributed work".

Despite actually being a .gif file, the "image" features an autostereogram and tells the viewer to stare and focus on it, as well as the point. The viewer also has to "guess what it is." After 14 seconds, the autostereogram changes into the image of Goatse. There is a newer version of this gif in which the image changes to that of a 256 color version of hello.jpg.

Link
NOTE : The following shock site contains pornography!
 * web.archive.org/web/20031002020916/goatse.cx/contrib/magiceye.jpg