I'm not happy about having to wait until July to see the Christmas special, but it was worth the wait, just. David Tennant looks promising and we see the continuing mix of action and its impact, eg. The Doctor is wondering what sort of man he is, while Rose is freaked out about the whole regeneration thing.
Rose and the Doctor return to Earth, with the Doctor promptly fainting upon exiting the TARDIS. Jackie and Mickey wonder who he is. They take the Doctor to Jackie's flat where he rests. He emits some golden light from his mouth and it floats off.