A new Doctor, a new showrunner, and a new era for the show;  A lot of the charm and humor returns as well but it's still a pretty ok, middle of the road episode. I don't like that David Tennent has returned as a new incarnation. I don't like how Donna's memory wipe was undone. There was never going to be a satisfying way to get Donna's memories back - ultimately it was something that should not have be undone, but surely could've done better than what we got. At the very least Beep the Meep was hilarious and David Tennant and Catherine Tate are still as awesome as ever.  Sylvia and Rose are also great additions. This is still a massive step up from what came before.