Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
Nothing. The entire Mayan calendar thing they're claiming predicts the end of the world, doesn't even predict it. It's called the Long Calendar, and it goes from day 0 to day 1,872,000, then restarts at 0. December happens to be day 1,872,000, followed by day 0.
Nutjobs, anyone who believes it.