(Photos: BBC)

Merry Christmas! Welcome to this week’s festive Doctor Who’s Day roundup, a great big Santa’s sack full of Whovian presents that his elves grabbed from the past week on the internet and social media.

And while it’s fair to say that this week has already been dominated by one of the Doctor’s greatest foes, that doesn’t mean we can’t start things off with a bit of a festive sing-song.

Treat yourself to a lovingly edited rendition of “All-Star” by Smash Mouth, as performed by all of the Doctors and their friends and enemies:

And this isn’t the only Whovian choir giving this Christmas a melodic twist:

Of course, it wouldn’t be a proper Whovian Christmas without asking an AI to rewrite the Doctor Who theme, would it? Exactly:

Read on to see what else has been going on in space and time this week!

• Monday, December 21 was #DalekDay on social media:

• Daleks in Disguise, Part 1:

• Captain Jack isn’t the only one to make good use of bronzer:

• A melancholy Dalek considers a world with no extermination:

• This astonishing Dalek animation that will blow your mind.

• A gallery of Skaronian swine:

• Nicholas Briggs explains how to voice a Dalek:

• Just because this Dalek is cute, it doesn’t make it any less dangerous:

• Daleks in Disguise, Part 2:

• And finally, a resurfaced classic:

• And if that wasn’t an exciting enough fan celebration, we got Matt Smith, Karen Gillan, Arthur Darvill and Steven Moffat participating in a tweet-along rewatch of their “A Christmas Carol” special. A few choice moments:

• It’s not entirely clear who is the Doctor and who is the companion in this alternate reality title sequence, but we’d watch the heck out of it regardless:

• How much are chameleon circuits on eBay? Asking for a friend:

• The Pre-Doctor Doctor learns how to kick rhino-face butt:

• Speaking of former Doctors...

• And how about Ten and Twelve (and the Doctor’s Daughter) appearing in quiz form to raise money for charity?

• Seven reappears as a sonorous voice in this homemade ambient song that bears a striking resemblance to the pioneering work of the BBC Radiophonic Workshop:

• Christopher Eccleston discusses Nine’s return to active service on British TV:

• Thirteen and her scarf rendered in loving acrylics:

• Dogtor Awhooooooo!

• Dogtor Who, Part 2:

• And now, let's finish on a suitably merciless note (or series of notes) from our favorite tinpot tyrants. A history of Daleks:

TTFN!

• Oh wait, they want the last word, it seems: