oh, that mayan long count calendar thing is nonsense. the movie looks really cool, though. i saw the trailer when we went to see the transformer movie.
as far as doomsday, i think the head muckety muck had been working on the calendar somewhere in the yucatan 2600 years ago decided that he had worked it out long enough, and no one would ever care to look ahead that far. so he finished his cocoa, adjusted his loin cloth, and went home.
lol, actually, one theory is that it's just the end of a cycle, sorta like getting to the end of the month and flipping over the page to reveal the next cycle.