Today is supposed to be the end of the world. Or so say those who believe the end of the Mayan calendar marks the apocalypse. Hollywood has tried to create a vision of what the world would look like after most of humanity just suddenly died off. At times they tried to show us these frightening and sometimes hilarious views of a post-apocalyptic Las Vegas. What was the Mayan calendar really telling us? And, if in case world ends Friday, but a few of us survive, we'll look at life in Sin City where zombies roam and we fight for survival.