All this is from an Ancient Mayan calender that stopped at 2012. Why? I'm pretty sure that the Mayans probably thought that their empire probably wouldn't last that long anyway, so why keep adding more years to the calender?
Personally, I'm hoping for the whole galactic council with the aliens and whatnot, so long as they don't want to...you know...wipe us out or enslave us or something. Maybe they'll give us advanced technology and teach us a way to actually stop killing each other and to better ourselves? I'm not holding my breath.
I believe that the only thing that will happen in 2012 is that a few cults will commit suicide, a bunch of people will be a little nervous (kind of like a bunch of people were June sixth, 2006 at six o'clock "Oh no, the Devils coming to get us") and in the end I'll just call those people who were nervous and downright scared stupid, like I did to the June 6, 2006 people.