Agalma is a rather grizzly project in which the artist uses his own body fat to create a bar of soap. Warning: The images are (possibly) NSFW.
The artist, Zoran Todorovic, states on his website that he wants to highlight how soap is made and to make us think about how we keep clean. This isn't really science, but I suppose it throws into question how clean surgical equipment must be, and how clean the surgeon must be too!