Contact Mic

http://abduzeedo.com/sound-design-contact-mic-recording-and-water-foley

Concept: "Contact Mic Recording is a form of microphone specifically designed to pick up audio vibrations in solid objects. Normal studio mics are all built around the principle of detecting vibrations in the air but Contact mics are different in that they are designed to pickup surface vibrations."

http://vimeo.com/31926631