http://www.2012hoax.org/
Everyone needs to read this site. Every word. It is a page made by some intelligent people around the world to disprove 2012.
Summary of it all:
The Mayans died before they finished the calendar, it was NOT a prediction, nothing was predicted at all, the planets will align, but nothing will happen, no volcanoes will explode, nothing.
Most people who believe the shit are just trying to freak out little kids.
Honestly, even if it does come true, what can you do about it? Just live life to the fullest. Make the best of it. And I would still reccomend going by that rule even if 2012 wasn't the end.
Regarding the movie "2012";
I find it abit unrealistic. I haven't watched it, but jumping into an airplane after the earth splits apart seems abit unrealistic. I mean, where could you go, really, to avoid death? The government can't pull out rockets out of their arse.