iPhone, iSynth, iTouch, iBot...
OK this is not a theremin, and you must touch it to play it.
But BeBot is one of the richest synthesizer applications to come out for the iPhone, and I must admit seeing the words "Theremin demo preset" and "theremin-like continuous pitch system" in common iParlance warms the aether-cockles of my heart and is a sign how much our instrument has gained in the popular consciousness.
Viva la Renaissance de Theremin!