Optical illusion

[st.j]

optical illusion.
interesting

http://www.optical-illusion.org

:roll:

[nickless]

:( damn I already knew them all... pretty few illusions they have there

[st.j]

nickless :(
sorry

[nickless]

haha no problem :D

[endy]

Two of my favourites, firstly some eye bending stuff:

http://www.ritsumei.ac.jp/~akitaoka/index-e.html

Then, for a more hands on person:

http://www.grand-illusions.com/dragon.htm

Edit: Almost forgot this one, I had to use The Gimp to check it as it's just crazy:

http://www.grand-illusions.com/chequerboard.htm

[nickless]

http://www.unf-unf.de/show894.html
Fist two illusions are ok, but check out the 3rd one :D