Okay, so if you haven’t watched the special, I would NOT recommend reading this post until AFTER you have watched it. I don’t want to accidentally give away any spoilers.
…And inside looks at the 50th special:
And if that wasn’t enough, the Classic Doctors have tried to get involved with the 50th Special. The BBC have released the 30 minute Five Doctors Reboot which you can find here: http://www.bbc.co.uk/programmes/p01m3kfy And don’t forget to check out the other goodies on there too. (I apologise if it doesn’t work outside of the UK!)
And once you have finished with that, how about some (Christmas) pudding with the Christmas Doctor Who Teaser Trailer?: