For two thousand years, cadavers—some willingly, some unwittingly—have been involved in science's boldest strides and weirdest undertakings. Cadavers were around to help test France's first guillotine, the "humane" alternative to hanging. They were there at the labs of Lenin's embalmers, helping test the latest techniques. They've been there (on paper) at Congressional hearings, helping make the case for mandatory seat belts. They've ridden the Space Shuttle (okay, pieces of them), helped a graduate student in Tennessee debunk spontaneous human combustion, been crucified in a Parisian laboratory to test the authenticity of the Shroud of Turin.