Ok, first off … sorry … that Matrix quote was only put up there to attract your attention.
Now, that I’ve apologized … look at this page …
First … notice how the pink dots keep disappearing? Then focus on the black + in the center … notice a green dot going around? Keep a very strong focus on the + … notice that all the pink dots disappear?
The real clincher … there never was a green dot, and the pink dots never disappeared!
Pretty cool ppl at PatMedia … everything else aside a good animated perception puzzle.