TV THIS WEEK: It's a time-traveling Fringe finale, Chuck and more!

The end is near for several shows as they approach their season finales with stakes-raising episodes. The first to go is Fringe, which heads off into the sunset this week with a time-traveling finale that promises to make us cry as one of our favorite characters is killed off.

And this week, Chuck meets Agent X on Chuck, President Martinez struggles to survive on The Event, the drones continue their assault on the Destiny on Stargate Universe, Will begins to transform into something lizard-like on Sanctuary, the Cartoon Network offers up a new Looney Tunes Show, Raj tries to get over his issues when it comes to talking to women on The Big Bang Theory, Klaus pursues his murderous plot to end the curse on The Vampire Diaries, Lois ends up with Clark's powers for a day on Smallville, Castiel explains the civil war in heaven to the brothers on Supernatural, Arthur tries to protect Guinevere on Camelot, Doctor Who has a high-seas adventure with pirates, Syfy weighs in with its own movie version of Almighty Thor, and Ned investigates the death of Jon Arryn on Game of Thrones.

Here's what we have to look forward to this week on sci-fi, fantasy, paranormal and spy-fi TV.

Monday, May 2

Chuck (NBC) 8 p.m. - "Chuck Versus Agent X"

Chuck and Sarah take a break from the spy biz for their bachelor and bachelorette parties, but things don't go as planned. Meanwhile, Ellie makes a life-altering discovery while digging into her father's computer. However, what we really want to know is whether or not Chuck and Sarah will make it to the altar and say "I do" before the end of the season (and perhaps the series).

Here's a preview:

The Event (NBC) 9 p.m. - "Us or Them"

With President Martinez taking a turn for the worse, Sterling pursues his investigation. Meanwhile, Sophia continues to manipulate the new president, while Michael and Leila attempt to rescue Simon. Elsewhere, Sean and Vicky try to identify and stop Sophia's courier.

Here's a promo:

Stargate Universe (Syfy) 9 p.m. - "Blockade"

With only one more episode to air for the series after tonight's, things get tense when the drones find the Destiny again, and Eli suggests a risky plan that involves the crew using the gate to get to a nearby planet. This is the last episode before next week's series finale.

Here's a preview and a sneak peek:

Sanctuary (Syfy) 10 p.m. - "Metamorphosis"

When Will begins to transform into a creature with scales, Magnus looks to Hollow Earth for help.

Here's a preview and a sneak peek:

Other Monday shows of interest:

On A&E's Paranormal State (10 & 10:30 p.m.), the PRS team comes to the aid of a family haunted by a nasty spirit in "Get Out of This House," and then paranormal investigator Ken Arrington heads an investigation in "If I Should Die."

Tuesday, May 3

The Looney Tunes Show (Cartoon Network) 8 p.m. - "Best Friends"

Series premiere! This new series follows the adventures of Bugs Bunny and Daffy Duck as they deal with the modern world. In the first episode, Daffy and Bugs go on a game show and get quizzed about each other. However, Bugs is none too happy with Daffy's answers.

Here's a sneak peek:

Other Tuesday shows of interest:

On the premiere of the Cartoon Network's other new series, The Amazing World of Gumball (8:30 p.m.), Gumball attempts to figure out a way to not pay a fee when he accidentally destroys a rented DVD in "The DVD."

Thursday, May 5

The Big Bang Theory (CBS) 8 p.m. - "The Wildebeest Implementation"

On a revealing episode Raj tries to figure out a way to talk to women, while Penny and Bernadette spy on Leonard and Priya.

Here's a look:

The Vampire Diaries (The CW) 8 p.m. - "The Sun Also Rises"

Elena tries to save someone she loves from Klaus's sacrificial plans, while Caroline and Matt try to survive a werewolf attack. Meanwhile, Damon lets Stefan in on some bad news when it comes to Klaus' plans. This is the last episode before the big finale next week, and you have to admit, it's getting good.

Here's an extended promo:

Nikita (The CW) 9 p.m. - "Betrayals"

Part one of the two-part season finale! Nikita snatches a CIA cryptographer with the ability to decrypt the black boxes to protect him, while Michael takes a risk to help Nikita.

Here's a preview:

Other Thursday shows of interest:

On National Geographic's Known Universe (9 p.m.), how the human body deals with outer space is explored on "Surviving Outer Space."

Friday, May 6

Smallville (The CW) 8 p.m. - "Prophecy"

We're getting oh so close to the end! In the second to last episode of Smallville, Lois gets Clark's superpowers for a day as a wedding gift from Jor-El. However, when the Toyman blows into Metropolis, it's up to Lois to stop him. Elsewhere, Oliver learns he has the Omega brand and runs into Kara during his search for a way to stop Darkseid. Laura Vandervoort guest-stars as Kara.

Here's a preview:

Supernatural (The CW) 9 p.m. - "The Man Who Would Be King"

Castiel sheds some light on the civil war in heaven and tells Sam, Dean and Bobby what went down between him and Raphael. However, Bobby still believes the angel is holding back, and we know from last week something big is going on between him and one big, bad demon.

Here's a look:

Fringe (Fox) 9 p.m. - "The Day We Died"

Season-three finale! It's a trip 15 years into the future for Peter as he discovers what happened to Over There when he went into the machine. Producers have said someone we care about will die. Who do you think it's going to be?

Here's a promo and a what-the-heck sneak peek:

Camelot (Starz) 10 p.m. - "Three Journeys"

The men of Camelot leave the safety of the castle and travel into dangerous territory, and Arthur follows Guinevere when he discovers she's on a trip by herself to see her father.

Here's a look:

Other Friday shows of interest:

On the Animal Planet's The Haunted (10 p.m.), a family discover their energy is being drained by a creature that follows them from house to house in "Stalked by a Vampire."

Saturday, May 7

Doctor Who (BBC America) 9 p.m. - "The Curse of the Black Spot"

It's looks like a splendid pirate adventure for the Doctor and his companions when the TARDIS becomes stranded on a 17th-century pirate ship that's under attack by a beautiful sea creature.

Here's a preview:

Almighty Thor (Syfy) 9 p.m.

On this Syfy Saturday night at the movies, the channel takes advantage of the theatrical release of Thor by offering up their own version of the hero and his adventures on Earth. In the TV flick, Thor (Cody Deal) battles a demonic god (Richard Grieco) who plots to destroy Los Angeles. Between demonic gods and alien invasions, Los Angeles is having one rough year.

Here's a look:

Other Saturday shows of interest:

On the Bio Channel's My Ghost Story (10 p.m.), several people tell their ghost stories, including a man who was stabbed by a ghost in Tombstone, Ariz.

Sunday, May 8

Game of Thrones (HBO) 9 p.m. - "Cripples, Bastards and Broken Things"

Ned hunts for the real cause of Jon Arryn's death, and he meets a blacksmith's apprentice with an unusual family history. Meanwhile, Daenerys holds her own against Viserys, and Sansa and Arya enter their first jousting tournament.

Here's a look:

What are you going to watch?

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