I saw this video over at Bad Faery's blog. I just loved it! It was really interesting to see the way the artists played off each other and interacted through their art. The premise was that these four artists were "given 5 hours, along with paint brushes, pens, pencils, a hairdryer, ink, acrylic paint, water color, makers, and collage. The were told simply, 'Do your thing and play off each other,' with each starting in a different corner of the canvas."
A better quality Quicktime version is available, too.