I love to paint busts!
With a bit of practice delivering a good story in a standard model with arms and legs becomes pretty easy because the extra information that comes even from the simplest form of body language already covers a good chunk of the visual story, but a bust is ALWAYS an interesting challenge!
I'm really fond of this video because it shows that a display model is not really about different methods, tools, techniques (even if I've used a couple of cool dirty tricks ;) ) or even extra commitment or time investment; what makes the difference (at least for me) is lack of background boundaries, the truly infinite potential of the sculpt and the freedom to go fully illustrational!