Waves of Grain from Keith Skretch on Vimeo.
A little explanation:
Images by Keith SkretchTo create this strata-cut animation, I planed down a block of wood one layer at a time, photographing it at each pass. The painstaking process revealed a hidden life and motion in the seemingly static grain of the wood, even as the wood itself was reduced to a mound of sawdust.
Sound by Ennio Morricone, "The Big Gundown"