The effect is nice looking, but I think it provides a little too much depth to things like the rocks. About half that is more realistic, as I've never seen a rock wall that juts that much. I have seen several rock walls that have half that much variance though, and the bricks are a little too far out as well. Other than the subtle things, the overall algorithm makes a nice effect.

Slightly choppy, but a workable 74FPS on:
AMD 4800+ X2 64
XFX 8600GTS 256MB
2GB 6400 G.SKILL RAM

Chronzo, the mouse does a click-turn, click-stay style manner of looking. So click and look, then click and recenter your mouse. A little tedious, yes, but better than nothing.