Nice. I'm actually working on something a bit different, though. Remember all that foolery a few weeks ago about analog synth emulation? Well, I figured out what to use it for:

Tesla Coil + Analog Synth = Awesome

Thing is, I already have a Tesla coil, in the form of a Kirlian deck similar to the one on this page. I'm thinking that I could strip the guts out of the thing, rotate it 90 degrees, and modulate the plasma discharge using a voltage generated by the synth program.

I am only just now thinking about how to build the thing, but it oughta be pretty cool if I can get it to work.