an ePetition, which you'll find at here.

I prefer to wait until it airs locally. Downloading pirate or other versions of the episodes just seems like cheating myself of some fun, though trailers that are being shown by the ABC mean that it's imminent! Of course here the ABC have been repeating DR WHO seasons (new series) 1-6 one episode a weekday (and this is the 2nd repeat). Yesterday was "A Christmas Carol" so by my reckoning there's 14 more episodes to go before they might show the new season (13 for season 6 + the Xmas special)

As from The Guardian:

The actor Caroline John, who has died aged 71, was best known for defending Earth from alien invasion alongside Jon Pertwee's Doctor in the first colour series of Doctor Who, broadcast in 1970. As Dr Elizabeth Shaw, she provided brains, cool-headed intelligence and maturity where once the Doctor's female companions had screamed and asked questions.
(more on link)

Not that widely remembered as as Liz Sladen or Katy Manning as a Doctor's companion, but I always liked her character.
 

The following was in my daily email from TVFix (a local TV website where you can track favourite shows et cetera):

Well yes, that is the episode to be shown tonight. Only aren't those cast members from CSI, or judges from X-Factor? Maybe there's been some drastic casting changes since the mid season break!