The world may or may not be ending on December 21, 2012. I'm not an expert on the ancient Maya (although I've climbed many Mayan pyramids and have long been fascinated by their history, see proof below), but I've heard a rumor that this week marks the end of the Long Count calendar, meaning a new era begins on Friday, December 21, 2012, bringing a new civilization. Also, potentially a planet called Niburu might crash into the earth (although NASA has confirmed they have seen no evidence of this).
So, what's your plan? Will it be a space ark? A time machine (i.e., a TARDIS)? Wormhole (a la Fringe)? Should you consider sending your data to Mars? How do you even prepare for the unknown, the black swan events that are highly improbably, but highly disruptive?