So I caught sight of this on DeviantArt and couldn't help but think it looks like a fun and interesting idea that could also help people improve on their art skills. Basically, one artist does the sketch, then passes it off to someone else to do the line art, and then that second person passes it off to a third person who does the coloring. As shown in that example, you get some pretty interesting results.

Anyone else interested in giving this a spin?