the blocks? random tool? hmm..is this in Bryce, or something else? There's something very similar to this in Blender called Discombobulate, which is one of the only 2 things in Blender that I've found useful so far (old habits, and Wings, y'know..;). But this looks much more controlled. A tutorial would be interesting..hint, hint..;)

I wish I'd said that.. The Staircase Wit

anahl nathrak uth vas betude doth yel dyenvey..;)