This Week's TV: Who lives and who dies in the Walking Dead finale? There's tons on television this week. Like Lady Gaga and the Muppets! A new Star Wars special! Dean Winchester becoming a virgin! Bizarre TV movies! A MST3K marathon! The Walking Dead midseason finale! But we still want to put in a special plug for a must-watch show: Nikita.

Seriously, if you're not watching Nikita in its final season, you're missing out on no-holds-barred crazy excitement. Scroll down to find out more about that, plus clips and details for all this week's brand new episodes!

Top image: Lady Gaga and the Muppets

Today:

Adventure Time and Steven Universe (7 PM, Cartoon Network):

First, Princess Bubblegum asks Finn and Jake to help collect samples in the Desert of Wonders — but her robot helper James is causing trouble and goo monsters are attacking. And then, Steven tries to master the power of shape-shifting, but only manages to turn his fingers into tiny cat heads. Oops! Also, there's a 30-minute Regular Show Thanksgiving special at 7:30, and a new Mad at 8:30.

Almost Human (8 PM, Fox):

Check out three clips above! Not only is this the most straight-up science-fictional new show this fall, it's also a pretty decent hit thus far. This time around, Kennex and Dorian deal with a hostage situation — but Captain Maldonaldo wants to meet the terrorists' demands.

Beauty and the Beast (9 PM, The CW):

The midseason finale — which could mean that the "alters for good" thing below actually refers to a meaningful change in the show's status quo. Here's hoping, anyway:

A DIFFICULT DECISION ALTERS CAT AND VINCENT'S RELATIONSHIP FOR GOOD —Vincent (Jay Ryan) and Cat (Kristin Kreuk) find themselves at odds on how to deal with Agent Reynolds (guest star Ted Whittall), which forces Vincent to wonder if he is more beast than man.Cat makes a drastic move that will forever change her relationship with Vincent.

Sleepy Hollow (9 PM, Fox):

Now that we know that Ichabod's woman-stealing ways are responsible for this whole mess, we're going to be learning even more secrets about his past. This week: a missing persons case leads to a Colonial house that's connected to Ichabod's past, and another long-buried evil is unleashed.

Also on TV tonight: There's a new Castle on ABC at 10 PM.


Tuesday:

Agents of SHIELD (8 PM, ABC):

Looks like it's Melinda May's turn to get some development — this week's episode is all about a mysterious force that threatens the team, and only a secret from May's past can save them. Oh, and maybe there's some fall-out from the Grant/Melinda hookup last week?

The Originals (8 PM, The CW):

Two sneak peeks above! This show wins 10000 points for naming an episode after the incredibly underrated Elvis Costello/Allen Toussaint collaboration The River in Reverse. For that alone, I already love this episode.

THE FIRST BATTLE OF THE WAR — Rebekah (Claire Holt), facing a difficult decision, turns to Father Kieran (guest star Todd Stashwick) for guidance.Elijah (Daniel Gillies) struggles with the consequences of a recent fallout with Klaus (Joseph Morgan).Hayley (Phoebe Tonkin) remains by his side but is soon drawn away by a mysterious figure who sheds some light on her past.Meanwhile, a frustrated Cami (Leah Pipes) struggles to make sense of a cryptic message she's come across.Finally, when an unsuspecting Marcel (Charles Michael Davis) uncovers some upsetting information involving Klaus, a confrontation ends in a surprising twist.

Supernatural (9 PM, The CW):

Not sure I'll be able to deal with seeing Sheriff Mills again, without Bobby around. But meanwhile, we get to see Dean become a born-again virgin — the above clip is one of the funniest Jensen Ackles moments in years.

SAM AND DEAN REUNITE WITH SHERIFF MILLS — Sheriff Mills (guest star Kim Rhodes) calls Sam (Jared Padalecki) and Dean (Jensen Ackles) for help investigating multiple murders in her small town.Discovering all four victims belonged to the same church chastity group, Sam and Dean decide to infiltrate by joining the group themselves.When Dean disappears, Sam and Sheriff Mills realize whatever they are hunting has taken Dean too and team up to rescue him.

Futurescape (10 PM, Science):

This week, James Woods looks at the question of whether we can cheat time. How does he compare with Morgan Freeman and John Noble, hosts of similar recent shows?

Person of Interest (10 PM, CBS):

Part three of the huge three-part event. Still SUPER pissed about what happened last week. At this point, HR has to go down, for good, or it was all for nothing. Here's the synopsis: "The team seeks justice for Carter's murder, but Finch fears that one person may go too far in the battle against HR. Meanwhile, NYPD officer Patrick Simmons' number comes up."

Also on TV tonight: There's a new Total Drama: All Stars on Cartoon Network at 7 PM, followed by Amazing World of Gumball, Uncle Grandpa and Annoying Orange. If you subscribe to DirecTV, you can see the first season finale of Black Mirror at 9 PM. Also at 9, Discovery has a new Doomsday Preppers. At 10 PM, Spike has a new episode of Criss Angel: BeLIEve.


Wednesday:

LEGO Star Wars: The Yoda Chronicles (8 PM, Cartoon Network):
Concluding the trilogy of Yoda-centric LEGO adventures, full of in-jokes and goofy sight gags. In this one, Yoda and the Jedi learn of a meeting of several Sith Lords (because in the LEGO-verse, there's no Rule of Two?) and go to intervene — but it's... wait for it... a trap.

Also on TV tonight: Comedy Central has a new South Park at 10 PM. Science has the season finale of How the Earth Works at 10 PM.


Thursday:

Marathons! (All Day, Various Channels):

Syfy is showing James Bond movies all day long. BBC America figures you've had enough Doctor Who, so they're marathoning Star Trek: The Next Generation. But the big treat is a fan-selected Mystery Science Theater 3000 marathon starting at noon EST, online at MST3KTurkeyDay.com.

The Returned (9 PM, Sundance):

By all accounts, this episode ups the creepiness factor quite a bit — notably the discovery of a group of hundreds of drowned animals, which flung themselves into the reservoir rather than face... something.

Lady Gaga and the Muppets' Holiday Spectacular (9:30 PM, ABC):

Some of you are rolling your eyes right now. And you are people who lack any sense of whimsy, or any appreciation for postmodern wickedness. The rest of us, though, are probably at least a little bit intrigued by the notion of a Thanksgiving special featuring Lady Gaga and the creatures she once wore as a dress. Come on — this will either be actually good, or so-bad-it's-good. Either way, you win. Among other things, there's a love triangle between Lady Gaga, Kermit and Miss Piggy — why can't they just share? And Joseph Gordon-Levitt, Kristen Bell and Elton John. Check out a trailer above!

Also on TV tonight: There's a new Mysteries at the Museum on Travel at 9 PM. At 10 PM, there's a new Unsealed: Alien Files on Discover America. Yes, even on Thanksgiving, they keep unsealing them.


Friday:

Jinxed (7 PM, Nickelodeon):

Another new holiday TV movie, in which a family was "jinxed" with a curse by a witch, 100 years ago. Meg goes on a "zany journey" to find a way to break the family curse, so she can get with a cute boy she's met. The above trailer makes it look actually quite cute.

Nikita (9 PM, The CW):

Okay, seriously — the season opener of Nikita, which you can still view online, was ridiculously, insanely fun. I hadn't watched this show in a year or so, and I was able to get up to speed instantly. And it was a fantastic ride, in which Nikita starts the episode with the odds against her and only gets more and more screwed as the episode goes on. Nikita has been framed for killing the President of the United States, and she's the most wanted woman in the world. So how do they top that this week? Nikita has to figure out how to take out the Director of the FBI. Read on:

DOUBLE TROUBLE— Nikita (Maggie Q) reunites with Michael (Shane West), Birkhoff (Aaron Stanford) and Ryan (Noah Bean) aboard the team's aircraft command center.Michael refuses to discuss their relationship but tells Nikita she should stay with the group and let them help her clear her name.Ryan realizes Amanda (Melinda Clarke) is making doubles of VIPs with The Shop's help.Nikita discovers that one of the doubles is the Director of the FBI (guest star Alex Carter), but doesn't know how to kill him without exposing herself.Meanwhile, Alex (Lyndsy Fonseca) holds Sam (Devon Sawa) at gunpoint and demands he return what he stole from her, but when a gang of thugs attacks them they are forced to work together to escape.

Grimm (9 PM, NBC):

There's a vigilante in town, and they might be connected to an old Spanish legend. Meanwhile, Juliette learns the truth about Nick's mom, and Adalind's ultrasound gives some cause for concern.

My Santa (9 PM, Ion):

In this holiday TV movie, a woman falls for a young man working as a department store Santa — not realizing he's the son of the real Santa Claus, who's come to the real world to find himself a new Mrs. Claus. Soon enough, it's time for him to return to the North Pole — but what will she decide when she learns the truth? (You get one guess.)

Dracula (10 PM, NBC):

Now that we've told you why you should be watching this show — just like you should be watching Nikita — here's a particularly eventful episode to jump on board with. The "solar serum" hits a snag, General Shaw has a secret, Renfield is kidnapped and tortured, and Dracula ruins Harker and Mina's engagement party.


Saturday:

My Little Pony: Friendship is Magic (10:30 AM, Hub Network):

In "Castle-Mania," "Twilight and Spike are sent by Celestia to the ruins of her old castle for research, and unknown to each other, the rest of the ponies find their way there as well. Meanwhile, trap doors, secret passages and a dark presence known only as the Shadow Pony await them."

Atlantis (9 PM, BBC America):

Haven't gotten around to recapping Saturday's premiere yet, but suffice to say it's a fun show that (thus far) doesn't feel like another Misfits or anything. This week, Jason, Pythagoras and Hercules team up... with Medusa! Woot.

Also on TV today: Cartoon Network offers a brand new Ben 10 Omniverse at 9:30 AM. Nickelodeon has a new Teenage Mutant Ninja Turtles at 11 AM, a new Monsters Vs. Aliens at noon, and the 20th season finale of Power Rangers at 1 PM.Hub Network has a new Sabrina: Secrets of a Teenage Witch at noon, a new Kaijudo at 2 PM,a newSpooksville at 5:30 PM, and a new R.L. Stine at 7:30 PM. There's a new episode of The Thundermans on Nickelodeon at 9 PM. And there's the season finale of Axe Cop on Fox at 11 PM, followed by a new Golan the Insatiable.


Sunday:

Once Upon a Time (8 PM, ABC):

We're finally going to see how Regina adopted Henry, just as his life hangs in the balance. And the race is on to stop Peter Pan from getting his full magical powers from the "heart of the truest believer." This episode was co-written by Terminator: The Sarah Connor Chronicles' Daniel T. Thomsen.

The Christmas Spirit (8 PM, Hallmark):

You gotta love the flood of Christmas TV movies with wacky plots. Here's what happens in this one:

Charlotte Hart (Nicollette Sheridan), a distinguished journalist, is spending time with her family over the holidays when a real estate developer approaches their small town with quite an offer. Skeptical and looking for the real scoop, Charlotte drives to see the real estate head honcho to question him. While she's en route, she gets into a terrible car accident and wakes up in the hospital only to realize that her body is in a coma, but her spirit is very much awake. She meets another spirit, who just happens to be the greedy developer. It turns out that he was on the other end of the accident and he too is in a coma. With only a few days left before the town votes on the development, Charlotte must try to change the minds of the developer and the town, but that is no easy task when no one can see or hear her. Will her voice be heard?

The Walking Dead (9 PM, AMC):

The midseason finale. Check out a clip!All they're telling us is, "Just as things start to calm down at the prison, Rick and the group face imminent danger."

Witches of East End (10 PM, Lifetime):

OMG, turns out the only words that were needed to put this show back on my "must watch" list were "Enver Gjokaj." As in Victor from Dollhouse is now guest-starring on this show as a recurring character. This week: "A mysterious professor with old connections to the Beauchamps tries to help Freya regain her powers. Meanwhile, Killian makes a decision about his future in East End; Mike reveals an interesting theory to Ingrid; and Dash tries to solve the mystery of the catacombs."

Also on TV today: There's a new Masters of Sex on Showtime at 10 PM, while Animal Planet has a new Finding Bigfoot. At midnight, there's the season finale of Comic Book Men on AMC.

Sources: Futon Critic, MSN TV, TV Guide, and various TV studio press release