In preparation for Christmas and the premiere of this year's remaining Doctor Who specials, the BBC's official Doctor Who website launched their online advent calendar for 2009 earlier this month. The advent calendar will feature many exclusive treats over the next nine days and door number sixteen on the calendar is now available to open due to the fact that today is the sixteenth of December. Behind today's door, there's a brand new collection of videos celebrating the magic of Doctor Who. These new videos can be viewed in full here and content from behind the calendar's previous fifteen doors can be found here. This year's seventeenth door on the calendar will be available to open sometime tomorrow afternoon and details regarding the next special advent treat will be posted here on this site soon. What do you think of these new behind the scenes videos?