Wile E. Coyote makes for an interesting roll model, considering that he's not round at all, but his body does seem to be able to adapt to a rolling mode when enough force is applied.

Also, he is a SU-per Geeen-ius!

I agree, that a good stylus would be a good addition to a tablet. A crappy stylus is worthless, though. It has to be a good one.