If the world ends on December 21, 2012 as the ancient Mayan calendar predicts it will, the movies have already shown us what  to do: stow away gallons of water, turn household items into weapons, and find a hot girl to aid us on our quest for survival. In fact, that's the most important part: the good-looking woman. She's the key to procreation and redeeming the human race. Hollywood seems to know this quite well. Just browse through The 15 Hottest Girls in Apocalyptic Movies to see what we mean.