Spoiler
2012 AD is the end of the 5125-years-long Mayan calendar. Some think 2012 will mark the beginning of a new era when Earth and its inhabitants may undergo a positive physical and spiritual transformation. However others believe nothing ever changes for the better, and 2012 will mark the end of the world triggered by a solar flares maximum, then the earth colliding with an asteroid then a black hole.
After long consideration Alesha now believes the second will occur. This is why she is leaving the triviality of Strictly, to earn as much £ as possible in the time remaining, and to insult as many candidates as possible on BGT (in the process doubling her pay from Simon Cowell).
Alesha has accepted a party invite on New Years Eve to join Simon Cowell, Bruce Forsythe, Piers Morgan, and Rupert Murdoch as they hurtle into a Black Hole at midnight. At 11:58 pm Ann Widdicomb, Lulu, Russell Grant, and Mystic Meg have been booked to perform the Last Waltz.

If anybody has other inside info, please share it.

This is as realistic as any of the conspiracy theories on here already thumbs up to you - me likee!