wrote on Dec 31^st, 2012 at 1:33am:

"Oz Center, this is flight 123, we have a problem."

;D And that was my guess. If one actually calls the real Oz Centre (e.g.  Melbourne Centre), it's Mark who sets up things. Warning. He may never admit this. If he did, he would have to kill us. Just saying.  :o

But there's another theory. Since he has his new chair with the side stick and just admitted that a large part of the world's PC power is concentrated right at his home, there's a certain fear coming up. If the next thing he says is something like this.
http://www.youtube.com/watch?v=jTmXHvGZiSY&gl
We will know that he's about to take over the world.  8-)