Doug writes: "I liked the Kaoss Pad Guitar very much. I like complete control over my digital music and I have built two guitars that do just that. One controls midi parameters, the other uses a usb interface into max/msp." Doug's page is here, with some noise-tastic sound samples here. The Steinberger style guitar on the right is "equipped with two cds cells (light sensors), two pressure sensors, internal feedback loop and four sliders rescued from a salvage yard. It uses MIDI to control parameters to virtually any electronic device.", while the one on the left "Has all electronics built inside of it. It has one infrared sensor, one internal kill switch, 8 external switches and 12 potentiometers to control external electronics via USB interface". Amazing work, Doug!