We here at Fileunderi are huge fans of cool optical illusions (and even uncool illusions too).
Manfred Stader's Cup Of Coffee is one of our favorites because, well...we love coffee!As you probably guessed, the cup of coffee in the pic above is an illusion, painted on the stone. We think the woman is real.
See more great optical illusions at the approriately named Mighty Optical Illusions
Yes, that's a real link, not an illusion.