The last decade has seen a revolution in our understanding of the tiniest fundamental particle, the neutrino. The results of several experiments have shown that neutrinos oscillate and therefore have mass. This opens the door for neutrinos and antineutrinos to interact differently, and this little particle to explain the matter antimatter asymmetry in the universe. The first measurement to explore this possibility is a measurement of the third and smallest mixing angle governing neutrino oscillation q13. The reactor neutrino experiment Double Chooz is coming online now to make this difficult measurement. The physics of neutrino oscillation and reactor neutrino production will be reviewed. The commissioning data from the world’s newest neutrino experiment will be presented. It’s show time for Chooz.