My God, I can't wait 'till the 22nd so I can, not only shove it down there throats, but so I can stop seeing these questions (though I guarantee some "smart" person is going to post a question like "Who knew the world wasn't going to end?" and from there it'll never stop).
I don't think it's going to end and if it were to then it would be because it was meant to happen - not because some mayans supposedly predicted it (because they didn't), not because a group of scientists said the planets alignment would kill us, and certainly not because some intelligent basstard walking the street said so.
For all the skeptics and believers of this supposed "apocalypse" go here and from there what you believe is it. As long as I know you're properly educated in this topic. Here: www.nasa.gov/topics/earth/features/2012.html
Nothing's going to happen. The Mayan fella probably just got tired or ran out of room on his rock. Though I'm not going to go outside on the 21st. Not because I'm scared of the world ending,I'm scared of what the people who think it will are gonna do.