The mayan calander ending simply shows a lack of scalability with the method in which they used to determine time. Nothing more, nothing less.
Only gullible fools believe in this. There is a better chance of winning the lottery, being hit by lightning, then spontaniously combusting only to mysterious resurrect than watching the world end in 3 years time.
A more realistic theory is that the lottery was recorded, and he 'predicted' them after the lottery had already been on.
If he shows a tv screen with the lottery on 'live' and shows no video recorder connected, I would say he has used cgi graphics or some other means to super impose the images onto a blank tv screen to make it look as if the programme is on live at the time of the recording.. or even a hidden dvd played or something smaller hidden inside the tv wired up inside so you cant see any external connection other than the tv plugged in.