http://www.nasa.gov/topics/earth/features/2012.html
Our level of gullibility (or perhaps sheer stupidity) has reached the point where NASA has to tell us not to believe Roland Emmerich films are real life.
There is a new recut trailer out for 2012 with all the flashy special effects and computer graphics removed so that you can really concentrate on the acting. Because if there is anything to pay attention to while watching 2012, it's going to be the Oscar-caliber acting performances.