The Lost Thing is Shaun Tan's graphic novel about a boy trying to find out where a strange creature belongs. A friend showed me Tan's book The Arrival and it was really interesting. The fun part about this online excerpt from The Lost Thing is the way you turn the page. Frankly, when I get to a page, I have fun just rolling my mouse cursor over the lower-right corner and the right edge of the page. Watching it flip up and down is most excellent.
The Neuroscience of Illusion is an image gallery that accompanies a Scientific American article about how the brain processes images. Each illusion is accompanied by text explaining something about the illusion.