Endoscopy, or the examination of a person's bowels via a tube-mounted camera, is not exactly the most pleasant medical procedure one could undergo. In 2004, we noted the early stages
of a project to alleviate the (literal) pain of the procedure with a spider pill, which -- once swallowed by the hopefully willing patient -- can be remotely controlled and positioned inside the human body. Yes, it's a tiny, wirelessly communicating robot with a camera for a head crawling inside you. Hit the read link for the full BBC
report, it really is worth seeing, and start your Innerspace
jokes ... now!