i think this is a really inspiring and totally creative new way of controlling sounds.
“The Pulse Controller is a hardware / software solution that liberates computer-based musicians and performers from conventional input devices by allowing a surface – i.e. desk, laptop, objects and more – to become a playable MIDI controller. An included piezo microphone coupled with a simple yet powerful software interface converts acoustic impulses into MIDI Note messages for playing your software instruments in an intuitive, responsive and connected manner. “
More info here: http://pulsecontroller.com/welcome.html