Doctor Who Advent Calendar Day Twenty-One

With only four days until Christmas, the BBC today opened the twenty-first door on their online Doctor Who Advent calendar, only available on the official Doctor Who website. Inside today's door is a video featuring David Tennant, who as fans known portrays The Doctor in Doctor Who, Russell T Davies, the lead writer and executive producer of the series, and Julie Gardener, executive producer of the show, talking about their idea of a perfect Christmas Day. The video runs for approximately one minute and forty seconds and can be seen inside the twentieth door inside the online Advent calendar by clicking here. Door number twenty-two on the official Doctor Who website's Advent calendar will be made available to open at some point tomorrow, and some details regarding the content of it will be posted here shortly after the door is openable. What are your thoughts on this?