Quick Draw was just released. It's basically an iPhone version of iSketch, and it works great! I was beta testing the app but I guess I'll be buying it now!
It's $6 (server fees) but it's a great app.
http://appshopper.com/games/quick-draw
It's $6 (server fees) but it's a great app.
http://appshopper.com/games/quick-draw