The Origami Forum

http://www.moillusions.com/2006/03/jesus-illusion.html

Concentrate on the four dots in the middle of the picture for about 30 seconds. Then close your eyes, or look up toward the ceiling. Within seconds you will see an image. Continue looking at the image…What Do You See?? Is it a heavenly sign?

LOL i say stare for about 50 seconds to work properly.

I only had to look 15 seconds.
I dont think it's a heavenly sign, it doesn't have anything to do with pasta!

Wikipedia has a nice article on the subject:
http://en.wikipedia.org/wiki/Optical_illusion

This is pretty old.

I saw this about 4 years ago.

I guess you're a bit late.

i saw this about 8 years ago

and the dick swinging champion is...

who? the suspense is killing me.

i bet people could do this with any picture and just put it in a black circle with the negative space making the picture. im going to make one

this one was pretty old ;P
not into this stuff much, but it is cool =D

Thats creepy.
I saw this random face thing.