According to David Icke, 2012 is just a distraction -- the REAL transformative year is 2016!
So, when nothing happens on December 21st, 2012 -- not to worry -- we've still got a few more years to prepare ourselves in excited anticipation for the REAL 'big change'.
"I think 2012 is a diversion, personally. And I think you're gonna see that exploited by hollywood movies and other things. My feeling is around 2016, life in this reality is gonna transform. And it's gonna transform because...this is a virtual reality. Quite provable fact."
And here he then goes on to refer to the matrix, where morpheus explains to neo that 'real' is just electrical signals interpreted by your brain. He also refers to the fact that atoms having no solidity indicates the 'solidity' of this reality is a construct, an illusion.