Kylie -steps back in time

Kylie is now confirmed to be starring in this Christmas's' episode of Dr.Who. Being set on the Titanic, most likely, I don't think it would be too much much of a stretch to imagine her playing a showgirl and no doubt singing an old classic- after all this last season already had two scenes devoted to pop songs with Rogue Traders and Scissor Sisters being on the Masters play lists.
In less eagerly awaited news... Catherine Tate is back reprising her role as Donna from last Xmas. I fast-forwarded most of the episode so grr might need to replay it again. Freema / Martha will be absent for the first half of season 4 but will show up for 3 episodes of Torchwood, which i still haven't seen. Its all swings and roundabouts but think this ast season wil be hard to beat.
Im not sold on Tate, ill miss Freema and im not sure Kylie can act, but she did ok on kath and kim.