Scary shit boys.
The Catholic prophecy of 3 days of darkness where most of the world's population will die just so happens to coincide with the Mayan prophecy of 2012 in which the return of Bolon Yokte Ku to earth will have 3 days of darkness during which the earth is transformed.
http://en.wikipedia.org/wiki/Three_Days_of_Darkness
http://www.3daysofdarkness.com/