In preparation for Christmas, the BBC's official website for Doctor Who was today updated with the ninth door on their Advent calendar. Inside today's door is a brand new quiz, consisting of twenty-five festive questions regarding Doctor Who episodes set during the Christmas period such as The Unquiet Dead, The Christmas Invasion, The Runaway Bride, Voyage of the Damned, and The Next Doctor. The quiz which is inside today's door on the official Doctor Who website's online Advent calendar can be found by clicking here. The tenth door on the calendar will be available to open from tomorrow onwards, and details concerning it will be posted here, on The Gallifrey Vortex, when it is openable. What do you think of today's new surprise?