Pages tagged optics:

Gallery - The next generation of mirrors - Image 1 - New Scientist
http://www.newscientist.com/gallery/dn16585-amazing-mirrors

I don't know how he did it, but it's pretty cool.
Six monster mirrors.
Trippy illusion - Boing Boing
http://www.boingboing.net/2009/04/10/trippy-illusion.html
una imagen casi hipnotica que hace que uno vea todo muy raro luego de verlo 10 minutos