For fans of Downton Abbey, the movie-length Christmas special is available for purchase from Zavvi. This is not some optional special - what happens in it is absolutely crucial to the storyline, and follows from the end of the second series.
Spoiler alert
Do not watch preview or read synopsis if you haven't watched season 2!
For a preview, see:
http://www.youtube.com/watch?v=I3lLLRtnFEo
Christmas 1919. Downton Abbey is hosting a lavish Christmas party, yet despite being the season of goodwill, tensions are rife and Bates’s arrest has cast a shadow over the festivities. Will he be a condemned man or will he be found innocent in time to dance with his new wife at the annual servants’ ball? Mary has to consider her future with Sir Richard Carlisle following a contretemps at the shooting party and Violet has concerns about Rosamund, whose new suitor - the dashing but raffish Lord Hepworth, is not all he seems.
It's not that cheap to pay over AUD 20 for this, but it's still 35% below retail. It's more for die-hard fans who can't wait for Channel 7 to get their act together and don't want to move to NZ. I wasn't able to find a cheaper price including delivery, especially now that Amazon UK has stopped the free shipping offer to Australia.
Please note that you will need a DVD player that will play DVDs from UK region.
[EDIT] Listed price has dropped from £12.95 to £7.95 (2012-02-06)
Should probably note that this is for watching AFTER series two, rather than the series one that was shown on ch7 here last year.