A young man, by the name of Adam Scott, has a blog called, appropriately enough, The Last Angry Young Man [1]. Adam got to wondering why monkeys in the zoo, and other primates, were able to subsist on nothing but pelletized "chow," and we humans must go to the grocery, pay a lot of money, haul food home, store it safely, prepare it, and then clean up. He figured he could save hundreds, if not thousands of dollars if he simply didn't have to buy food or the dozen or so kitchen appliances required to make meals.
Realizing that Man has been classified as a "hairless ape," and having researched the ingredients of commercial Monkey Chow [2], Adam decided to order a bag of chow and eat nothing else for one week, just to see what would happen. There is a video blog for each day of his odyssey. One of the points of interest is that he documents is the consistency of his poop.
An interesting experiment in the name of science!