It's the thing the cool kids (Kurtz and Penny Arcade*) are doing: streaming their desktops live as they draw. With people in a sidebar chatroom chatrooming as they do it.

Like them (observe how cagily I GAVE CREDIT, thanks), I'd be streaming on UStream. UStream is a quick register, makes no spam, and is easy to use. If you also have Twitter (and why not, it's also easy to register for and makes no spam), you'll get a Twitter when I started to draw.
My Twitter name is "divalea" and my Ustream name is DivaLea.

SO, I'm doin' this whether people watch or not, but of COURSE I want people to watch. Whatever I do would be work-safe (and kid or parent over the shoulder safe).