Some evangelical Christian sects believe that the world will end May 21st. Indeed, there are some 11 million search results for Google on this topic.
Not to be outdone (and apparently with a good sense of humor), the U.S. Centers for Disease Control has published a preparedness guide for ... a zombie apocalypse.
I'm glad that instead of the poor economy, perpetual war, the destruction of the dollar, the Japanese nuclear crisis and other "insignificant" problems, people are focusing on the "important" issues.