What is this noisemaker thing?

It’s a Theremin. http://en.wikipedia.org/wiki/Theremin

Most famous for low budget sci-fi sound effects and the Beach Boys “Good Vibrations”.

this is one of the coolest uses of the instrument
http://www.youtube.com/watch?v=nJYho56INKU
i wonder how expensive they are, i’d like one

Wow that thing is crazy. I had no idea something like that even existed.

Here are a couple of cool ones in case anyone wants to check them out. The Moog one is pretty classic: http://www.moogmusic.com/theremin/?section=product&product_id=14

And the Frostwave Spacebeam is a cool one by an indie hardware guy: http://www.frostwave.com/spacebeam/

I LOVE THEREMINS!! I wish i could play with one of those. That is by far one of the coolest instruments.
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I think the difference is in color. They are both dried up grapes.