The Candyfloss Kid takes a short look at creating fractured or broken polygons in ZBrush, that can be used as abstract rendered effects, or even for interesting alphas.

Quick demo using the clay tubes brush to smash/ fracture polygons as the basis for creating noise pattern alphas and other graphical fx

Candyfloss Kid notes that this is a technique that he discovered by accident a few years back, and shows how smashing or fracturing a mesh using the ZBrush Clay Tubes Brush beyond an extreme can be useful for creating ZBrush alphas, or graphical effects.