Mass Happiness has begun. The 2009 Albuquerque International Balloon Fiesta kicked off on Saturday with the spectacular mass ascension of 600-plus hot air balloons, dancing a delicate rainbow ballet in the air. The "mass happiness" theme is apt - it's hard not to smile at the sight of these balloons gently lifting into the sky. The annual Fiesta, which runs through October 11, includes a full roster of activities, but here are a few of the highlights.