Untouchable Mario

Super Mario Bro's controlled by a theremin. The creator- 24 year-old software engineer Greg Stewart. He has posted a video of himself on YouTube using the touch-free instrument to control the movements of the Nintendo's mustachioed Italian plumber.

Leon Theremin's invention of the 1920s is the only musical instrument that may be played without touch. Metal antennae on the machine sense the position of the player's hands, allowing one to control pitch and the other, volume.

Stewart's next project is working on an AirGuitar Hero and theremin combination. Can't wait.