Nick Newton from Calgary, Alberta Canada, created an odosketch of a skull.
odosketch is a site I hadn't come across before, but it's fascinating. It's a bit like drawing with light markers, and takes some time to master, as the color goes from small to large the faster you sweep it. The amazing thing about it, is that once your sketch is complete, you can watch the playback of how it was created. This is a great tool for digital doodling, and something that I'm going to let my daughter sketch on. To see Nick's skull being created, view it here.