Yes, that's Jon Stewart doing his best "air theremin" impersonation! A couple of our eagle-eyed members noticed this theremin reference on the Daily Show with Jon Stewart recently and I thought it deserved front-page attention. The reference is about 2 minutes into the video, but the whole clip is well worth watching. I won't spoil how Jon turns a rant about the war in Afghanistan into a theremin reference, so you'll have to see for yourself.
Watch: April 29, 2010: Afghanistan Stability Chart (TheDailyShow.com)