Harvey wishes he could attribute it all to his Slytherin cunning, but the truth is, it's mostly a combination of Ross's family heritage, coincidence, and pure luck that leads to their first meeting on the Hogwarts Express. (Or, Mike is a Veela, and Harvey defends him from his adoring masses.)

It's a constant shifting balance between the feline and the human. You are Arthur. You choose your own adventure ...

"You take me to the nicest places, McKay."

"Ah," Yusuf says, lifting a reproving hand, "are we calling less than 24 hours of memory loss amnesia now?"

The reason SAS Captain Arthur Pendragon can't keep a communications specialist in Team Excalibur because none of them are good enough. And then Lieutenant Merlin Emrys gets assigned to his squad, and Arthur does everything he can to prove that Merlin isn't good enough, either. Except he is.

Spock finds himself shifting between the Prime universe and his own -- for a very unexpected reason.

Groundhog Day AU. Brad Colbert wakes up and it's the same day over and over again.

That's the twenty-first century love song, baby. Glitz and glamour and every one of us is a liar.

An Ancient device gives John unexpected (and unwelcome) insight into the relationships of Johns and Rodneys across the multiverse.

"Can he understand us?" Sam wanted to know.

"Yes." Radek Zelenka waved a hand in Rodney's direction. "524,287."

"Ook."

"42,961."

"Ook-ook."

“You don't have a Dr. McKay?” he demanded, trying to keep his voice steady and trying not to imagine any one of the terrible things that must have happened for him to not be here.  Radek gave him a curious look. “No, we do. But who are you?”

"Well," Brad says, trying to think logically about an impossible affliction based on a movie about Bill Murray and a rodent. "What have you tried so far?"

“Yusuf,” she says, dangerously, “did you give my point man a love potion?”

“Get up, John,” Sherlock says, in a tone that has John jerking upright in bed, immediately, and grappling for his gun in his bedside drawer, even as he says, “Sherlock, what is it?”

Incomprehensibly, Sherlock simply says, “Voldemort.”

The entire female population of Sunnydale has turned into rampant lesbian nymphomaniacs, and only the Magic Penis of Re-orientation can save the day!

Charles, a miner from a poor village in the countryside, saves the life of Erik Lehnsherr, scion of a successful business family and the richest man on Eisen. Charles is a telepath and somewhat anxious about it, while Erik abstains from relationships because the lights flicker and doors open and electronics vibrate when he gets too excited.

Also features a long-suffering sister, a foul-mouthed bodyguard, and a best friend with a heart that is definitely not gold.

In which there are princes, spaceships, long journeys, and old secrets uncovered. (An AU sci-fi fairytale)

On the plus side, marriage is bound to be easier than proposing.

The new Muggle Prime Minister meets the Minister for Magic.

when they analyse the solution a few days later, Yusuf swears and his mind pops up with the thought Oh, shit, how did that get in there? and Arthur wonders why he ever allowed himself to be a test dummy for the newer, stronger stuff Yusuf wanted to make for his dream basement.

Agent Coulson captures Loki, in the form of a cat. And then he decides to keep him.

Mike swallows and stares unblinkingly back at Harvey when he says, “Like it or not, Mike, you made me the man I am today.” Time Traveler’s Wife AU.

He brings up a hand to rub his eyes and clear his vision, and freezes as he sees a paw instead of fingers.

“Oh, look! It’s Charles, and he’s been transformed into a cat by a malevolent government program! I wonder how I can change him back and thereby secure his love forever and ever, amen?”

As it turns out, fighting crime is the easy part.

He opens his eyes, and he is Erik Lehnsherr. He is hardly more than a boy. And he is walking through the mud on his way to the gates of Auschwitz.

After Magneto of an X2-ish future succeeds in the unthinkable, Charles sends his consciousness back to 1962 to guide Erik away from the path that will lead to the genocide of the human race forty years hence.

Charles knows that Erik has always loved him, and intends to use this knowledge + sex to seduce Erik away from his ideals in his youth.

There's no way this well-thought-out, sensible, debugged and 100% bulletproof plan can possibly go wrong.

"Merlin," it read in a very familiar and stern manner. "Stop defacing this book."

Of all the many things Merlin had ever worried about getting arrested for, despoiling the king's ward hadn't been one of them.

Merlin meets Morgana Le Fay at a support group for People With Freaky Unnatural Powers. Alright, it’s not technically called that, but it might as well be.

"You're being annoying, so no, I'd have to say this seems perfectly normal."

But legend also speaks of the scabbard, woven out of the very fabric of magic. Protecting the sword and its bearer from all harm. A man who bore the scabbard would not bleed from his wounds and no strike could kill him.

In the not so distant future, Merlin builds a tower. That's not suspicious at all.

Because, really, why wouldn’t the slash dragon’s fire create a slash sword?

"...and so I'm being recalled."

Arthur stared at him, stunned beyond words, because in Merlin’s lap were three little dragons.

"You know how some animals can only – they’re only fertile at certain times, and at those times they get very - they have to –"

As much as Merlin despised the idea of being forced into carrying out a destiny (generally), and having that destiny involve Arthur (specifically), he still secretly thought that being able to consider The Last Dragon a chatting partner was pretty wickedly cool.

Sam and Dean have an unexpected encounter at the Renaissance Faire.

"It figures that even as a dog, you’d be a prat."

He's not himself. Then, though his face doesn't move in the here and now, he feels himself give a low, soft chuckle. He hears it, and doesn't recognize the sound. Then the older Kirk claps his shoulder and squeezes it and says through the laughter, "Spock, you didn't really think I--"

The thing about magic is that it's a lot like chest congestion.

Jim's been taking fencing lessons from Sulu for over a month when Arthur Pendragon comes on board.

Merlin wakes up in Arthur's bed five times and incidentally discovers time travel along the way.

Who knows James T. Kirk better than James T. Kirk?

They had taught him all about the physical size of it in the Academy, of course; he knew that the Galaxy was about twenty-five kiloparsecs across, which was the length of the old Route 66 about 2 x 1014 times over. He'd worked that out once, doodled in the margin of his notebook in class, but he still hadn't really comprehended it. Because every time it was impressed on him just how monumentally vast space was, all he heard was the potential for new planets to explore, new life and civilizations to find. And while that was true, he had never really grasped that in between lay vast expanses of emptiness.

I can't tell from Spock, hobgoblin physiology being screwy and all, but the captain seems to be about six. Guessing that they've both lost the same number of years, Spock must be about the same.

Arthur lies to a sorceress and gets slapped with a truth spell. Awkwardness ensues.

There was something devastatingly cute about the mix of wide brown eyes, pale skin, pointed ears, and neat hair cut when packaged in a body barely over three feet tall and swimming in a blue science uniform top and dark undershirt that was entirely too big for his body.

If James wanted to debase himself in order to win a single date with Lily Evans, well, that wasn't much of a change at all.

Bones didn't notice anything unusual for the first twenty-four hours after they passed through the ion storm. There were the usual lingering headaches and dizzy spells, but that was to be expected and was nothing out of the ordinary. So when he arrived on the bridge the next day and was immediately bombarded by a barrage of chatter that seemed to be being transmitted directly into his skull, his first thought was that he had suddenly gone batshit insane and was hearing voices.

Jim has a pet. His pet is not a Vulcan. It is not even a half-Vulcan. Jim's pet is a Tribble.

This was why he was captain, and also awesome.

He follows Jim to the bridge, where Jim promptly sits down in the big chair, curls his legs up under him, and smiles beatifically. "I IZ KEPTAIN. I HAS A COMMAND."

Growing up is hard to do, especially in the shadow of your father’s reputation. Scorpius Malfoy has a tough time keeping his resolution to be the best Slytherin he can be when schoolboy games, unicorns, incompetent friends and a beloved enemy all conspire to teach him something different – and rather wonderful – about himself.

Merlin was getting out of hand. Or rather, the people around Merlin were getting out of hand, and Arthur wondered how much his reputation as a benevolent king would suffer if he ended up decking everybody who dared to impose themselves on his -- well, Camelot's resident sorcerer.

Jim is bitten by a creature that sucks his life force, and Bones and Spock try to cure him while he's dying.

"Right! Morgana and Guinevere it is!" Arthur agrees quickly. He’s not entirely sure how good of an idea it is to let Morgana be in charge of his kingdom, but he knows it’s an even worse idea to voice such doubts now she’s got the idea in her head.

Then that particular group of girls who always sit together—and out of all there's only one he thinks is hot but she never looks up at the right time—sitting next to Heineken, a broody kid who takes his skateboard to class, and whose real name is forever lost due to a supposed incident during first year introduction that involved a beer bottle, an unsavoury way of putting it to use and a partner too drunk to care.

The first time Merlin had burst into flames (and Arthur made a note to remind Merlin, the next time Merlin complained about a 'life of forbearance and servitude to a man who makes no allowances for his advisors, and is in fact so unyielding, so sulkingly unyielding, that he will not even wear the thicker-soled boots with the yellow stain on the heel unless it is the second hunting Tuesday of the month, even when it is clearly raining outside', that Arthur’s thoughts regularly featured statements such as 'the first time Merlin had burst into flames')—the first time Merlin had burst into flames, absolutely without warning, Arthur had not managed even the moment of calm he was desperately grasping at now.

1928, Cairo. Merlin Emrys is a special librarian and aspiring archaeologist. One day his brother, Will, brings him a new find of his: it could lead them to the fabled city of Amunhaptra, resting place of the pharaohs, and to some unforeseen adventures.

"Uther forced me to swear an Unbreakable Vow."

What really happened was that when Prince Arthur was born the King started boasting of his manly virility, saying that Nimueh's magic had been a fraud and that only he was responsible for the Queen finally begetting a child. And so, when Nimueh heard about this she enchanted the King and all his subjects, as well as all children born henceforth on Camelot soil with the most fitting curse she could imagine.

Arthur wanted to know what was going on in Merlin's head. He just didn't mean it so literally.

A Merlin-Supernatural Fusion. After a bitter parting and four years of silence, Merlin is contacted by Arthur to help find Uther, who has disappeared on the trail of Nimueh. Merlin is drawn back into the hunt, criss-crossing Britain in a vintage Jag with Arthur at his side, tracking ghosts, spirits, fantastic beasts, and Nimueh, the being responsible for the deaths of Ygraine and Hunith, years before. As well as the hunt, they must deal with their own relationship, and Merlin's special gifts that have begun to re-emerge.

Gwen and Lancelot cannot be allowed to get away with their betrayal of Arthur.

AKA 'The One Where Spock Prime is a Matchmaker'; but be warned that it's as much about Spock Prime and matchmaking as TOS is about modes of technology in the 23rd century.

After the bar fight, Nyota thinks to herself that if this is what being hit on by Jim Kirk leads to, she’s very glad she’s never going to have to see him again.

There's something in the air, pulling them together and pushing the kingdom apart.

Arthur opened his eyes a minute later to the sight of seven magpies streaking across the top of the clearing, their shapes dark against the white clouds and the muted grey of the sky. He tried to remember what it was that seven magpies meant—he'd had a nurse who had sung the rhyme to him as a child—but couldn't.

She'd then had the appalling sense of humor to use her fantastic, extremely-useful-for-warfare mutation of molecular transfiguration to turn Erik into a brown and white-spotted kitten.

Detailing one of Amanda Grayson's first diplomatic assignments, which happens to be on the USS Kelvin.

Possibly, Dean thinks when he flips off the radio and the kitchen falls into a buzzing, anxious silence, he is going nuts. Only maybe he's got some serious denial going on, that he's pushed the end of the world back underneath work, fixing the Impala, fixing other cars for Bobby's few customers.

The aliens were very sorry for nearly killing Captain Kirk, and wanted to fix things.

"You know, you could just teleport us out," he says, clearly irritated and waggling his hand like angelic powers of teleportation are Nationals winning Spirit Fingers. It's probably because all his gigantic Frankenstein-y limbs are cooped up and he gets claustrophobic when he can't let his freak flag fly, but Gabriel figures that if Sam really wanted out that badly, he could just use his roid-rage Hulk smash or something, so he's probably secretly enjoying this.

Be careful what you wish for.