Doctor Who crashes your Christmas party. Plus Buffy and Star Trek: TNG marathons!

The big event on television this week is the return of Doctor Who, airing in the U.S. and U.K. on the same day. There are also two new episodes of the vastly underrated Tower Prep. Plus some fun marathons!

Today:

There's literally nothing on today. Syfy is showing dinosaur movies, including its own Triassic Attack and Jurassic Park III. You could watch The Skulls, starring Joshua Jackson, on Cinemax at 8:15 PM and pretend it's a lost Fringe episode. Other than that, it's a wasteland.

Tuesday:

Tower Prep has two back-to-back new episodes, starting at 8 PM on the Cartoon Network. If you haven't checked out this show, which is like The Prisoner in a boarding school, this week is an excellent time to try it. In the two new episodes:

"Phone Home": Suki discovers that her older brother, whom she thought was dead, is alive and working with Headmaster. Meanwhile, the gang thinks they have figured out a way to hack their phones and make a call to the outside.

"Trust": On the eve of their escape from Tower Prep, Cal returns and Ian suspects him of being a spy. Meanwhile Ian learns about a group of disenfranchised students living in the woods.

And here are some clips from the first episode:

And the second episode:

Also, Syfy is showing its entire Alice miniseries from 2009, from 7 PM to 11 PM.

And the 1999 version of A Christmas Carol, starring Patrick Stewart as Scrooge, is on TNT at 9 PM — watch this to tide yourself over until Doctor Who's own version of this story appears on Saturday. (How long before someone splices the two together, so we get the Doctor versus PicardScrooge?)

Also, there's a new Meteorite Men on the Science Channel at 9 PM — focusing on Mundrabilla, Australia.

Wednesday:

Thank Oprah! There's a Buffy the Vampire Slayer marathon all day long, on the Oxygen network, from 9 AM to 6 PM.

There's a new episode of Undercovers on NBC at 8 PM, presumably because NBC is just burning off the episodes of this already-cancelled show. Sigh.

The MythBusters Holiday Special is on Discovery from 8 PM to 9 PM. And then at 9 PM, there's the eighth season finale of MythBusters — "Operation Valkyrie":

Adam and Jamie weigh in on a famous assassination attempt. Can you really "Slap Sense" into someone?

Then at 10 PM, there's the fifth season finale of Psych on USA: "Operation Yin 3 in 2D".

Thursday:

There's a new Ancient Aliens on the History Channel at 9 PM, followed by a new Brad Meltzer's Decoded at 10 PM. Also at 9 PM: The season finale of Mega Builders on the Science Channel. That's about it, I'm afraid.

Friday:

Syfy is showing a Star Trek: The Next Generation marathon all day long. Make it so!

And Animal Planet is having a marathon of Planet Earth all evening long.

Annnnd... that's about it for Friday.

Saturday:

It's Doctor Who day! To celebrate, BBC America is showing a marathon of Doctor Who episodes, starting at midnight Friday night and going all day long. Not only that, but at 1 PM Eastern (possibly other times in other parts of the country), BBC America is having the first ever airing of Doctor Who at the Proms, in which Karen Gillan hosts a live event featuring an orchestra playing Doctor Who music, featuring appearances by all the Doctor's most feared enemies. Not only that, but the Doctor himself, Matt Smith, puts in an appearance as well. It all leads up to the most anticipated television event of the week, in the evening. Scroll down.

Meanwhile, Discovery has a Christmas treat for you: a MythBusters marathon from 10 AM to 3 PM!

Comedy Central is showing both Bill and Ted movies over and over, from 1 PM to 7 PM.

TNT is showing the Librarian movies, which are sort of a precursor to Warehouse 13 starring Noah Wyle, Bob Newhart and Jane Curtin, starting at 2:45.

And then at 8 PM, The Hub has a one-hour special presentation of R.L. Stine's The Haunting Hour, with two new episodes: "A Creature Was Stirring," and "The Dead Body."

But that's not why you were scrolling down. Because at 9 PM (Eastern, anyway) BBC America is showing the long-awaited Doctor Who holiday episode, "A Christmas Carol."

Amy and Rory are trapped on a crashing space liner, and the only way The Doctor can rescue them is to save the soul of a lonely old miser. But is Kazran Sardick, the richest man in Sardicktown, beyond redemption? And what is lurking in the fogs?

Here are some clips:

Sunday:

There's nothing on today, unless I'm missing something awesome. Please let me know in comments what it is!