what about the possibility of another planet or something coming close to earth?

IMO, I believe that is the more likely case. I found some stuff about a so-called planet called "Nibiru" (it has other names, but I call it 'Death Star') that has been pretty much hidden from the general public by NASA. Honestly, I know there has to be some other sort of celestial body going out there. Nibiru is said to be about 4-8 times the size of Earth, so pretty much bigger than Jupiter. I don't know it's current location though, and it also mentioned that Antarctica is the only place to actually see this planet right now.

Nibiru is supposedly a dead or failed star, since it has been noted as a Brown Dwarf, so.. things could get messy. Planet X Facts (http://xfacts.com/xnews/index.html)was one site I read this stuff on. Nibiru was also mentioned on this site as well.

I'm still highly skeptical right now, but if this.... planet/star truly is real, it really could wipe out the better part of the population of Earth. I'm not saying it's the end of the world, I would just.. kinda say it's more like the end of current humanity as we see it.

I think that about ends my take on the matter... 2012 is highly debatable at the moment, and the gov. does like to cover things up fairly well