UK Scientists invented this computer-controlled model to simulate human digestion in an effort to reveal the mechanism how the ingested food is broken down and nutrients absorbed in the gut.
The device, made from sophisticated plastics and metals, can withstand the corrosive gut acids and enzymes, and can be fed real food.
It mimics both the physical and chemical reactions that take place during digestion - and can even vomit.
It even mimics the stomach contractions which are used to break up food, and send it on its way along the alimentary canal.
Link
BTW, Wim Delvoye also made a (controvesial) tattoed pig.
It's a piece of art doing the same thing, and it has existed for about six years by now (if i'm correct).
http://www.cloaca.be/machines.htm