More optical illusions than you could shake a stick at.

Today's man to read about is Felice Varini and his optical illusions. A quick wikipedia-ing told me he's a Swiss artist known for his geometric illusions in rooms and outdoors, sometimes all over towns, using projectors and stencils.
This is him at work, it's pretty incredible. It made me want to start drawing lines on the walls and see what I can do.

I think you might just like this too. This time it's French photographer Georges Rousse.