lol......I did try to use it a while back but it was pretty confusing. Doomsday is about the Mayan prophecy. Basically it points out the fact that the Mayans invented the calender, though their calender was very complex and detailed, and it showed how they predicted solar eclipses which is cool cuz you wouldn't think that people from that time era would be able to do such a thing without todays technology. The actual doomsday show really didn't talk much about the Mayans like you would think, it talked about different prophets from different times and places who made similar prophecy's to the Mayans. I can't remember the prophecy in detail, but it didn't just come out and say that we were going to be hit by a comet. All of the prophecy's that were explained just sort of pointed to the end being around 2012.