While ABC2 is showing all 6 seasons of New Who they also have the episodes on iView, for those of us who don’t have the DVDs to enjoy them again (well, for a bit).
They have the 2010 Christmas Special – The Doctor, The Widow, and The Wardrobe – up there for your view pleasure (depending on your thoughts): http://www.abc.net.au/iview/#/view/873253
There is also the 2010 and Christmas Special, A Christmas Carol available: http://www.abc.net.au/iview/#/view/691961
There is also the 2009 Special, The Next Doctor: http://www.abc.net.au/iview/#/view/331120
I’m guessing the Marathon will be on there eventually.
Also, for older viewers they have Torchwood season 1: http://www.abc.net.au/iview/#/view/391012