Here’s a handy cheat-sheet for anyone wanting all the Christmas specials of the current series. Each linked to its Amazon page:

• The Christmas Invasion
• The Runaway Bride
• Voyage of the Damned
• The Next Doctor
• The End of Time (Part 1 and Part 2 – not recommended for beginners)
• A Christmas Carol

Well, if we want to be completely complete, The Unquiet Dead is a Christmas episode as well, but it aired in April and without Christmas brouhaha. The holiday just gets a mention at the beginning and end of the episode. Then again, Charles Dickens does feature.