Link: Capsule Endoscopy information.
I guy at work had a bad case of Irritable Bowel Syndrome and was off work ill for ages. In the end they gave him one of these. “The camera takes two pictures every second for eight hours, transmitting images to a data recorder” Over the 8 hours in the upper gut it would take 57600 pictures. What a great flicker book/movie that would make!
Cost: £2000+ gulp.