"You're asking us to believe you died, woke up in another body, and now CONVENIENTLY can't remember who you were before." Rose shook her head, "That's insane." "I never said it wasn't," the stranger murmured. The pink and yellow human sighed, "What's your name then? Do you know?" The stranger thought for a moment, "I think they call me the Doctor."

Merlin has been waiting for nearly two thousand years for his friend, and he's tired. Standing on a high ledge, ready to jump, Merlin is shocked when a red converse clad man shows up and tells him he knows where to find Arthur. Can the man convince Merlin to step down? Who is the man, and how can he hear Merlin's thoughts? Rated T for slight suicidal themes and some violence.

Marty McFly can wrap his head around a bucket-load of stuff, (time travel, alternate realities, flying trains.) He'll happily help his friend, Emmet Brown, recover after losing his wife and sons. What Marty can't deal with is the floppy-haired young idiot wearing Doc's clothes who's knocking on his window at two in the morning claiming to be said friend.

What if when the 9th Doctor regenerated, the Time Energy he absorbed from Rose Tyler flipped around the order of his regenerations so that instead of sprouting an trench coat and tie, Rose must deal with a Doctor with an unearthly addiction to bow ties and suspenders? However, it's not 11's turn, and the paradox forces him to flip back and forth between his 10th and 11th self.

Et imagined what it would be like to finally meet his grandfather, the legendary Doctor. He thought of thousands of situations, but he never thought he'd find himself chasing a mulit-colored stingray across London in pursuit of his older sister, Susan Foreman, along side his new human friend, Raina Clemens, a girl whose life was written out in a book published decades ago.

Four psychiatrists and twelve years after arriving onto a stranger's doorstep, John Smith has been diagnosed with multiple-personality disorders, psychosis and schizophrenia. However, Vastra believes John is much more than he seems and offers him a place in her prestigious and mysterious school for unusual and talented adolescents. (mutants/superpowers AU)

Between Quidditch practice, pranking, Hermione Granger, detention (or, rather, gettting out of it), and, not to mention, helping the escaped convict Sirius Black, Fred Weasley doesn't have time to be a werewolf. But such is his new life, and he can't laugh it off this time.

Matt Smith has just finished filming the first half of season seven in Doctor Who and can't wait to spend some time with his family; however, destiny has other plans. As he's driving home, Matt runs into (literally) a man who looks exactly like him and claims to be the Doctor. Loosely, I'll follow season 5. I'm counting Matt as OC because he obviously isn't on the character list.

Everyone dies. That's what people do. But not me. Sherlock Holmes, consulting detective and unfortunate immortal. After waking up from my untimely death (which was meant to be fake) life has become far more complex. Now, to solve the ultimate mystery. Why me?

Amy Pond let the stone angel touch her, and now she's stuck in England, 1913. Discovered by a maid named Martha Jones, Amy is invited to stay in the house of her employer, John Smith, until Amy finds her husband. But there's something strange about John. He knows things he shouldn't, and vivid dreams plague him at night. Is John more than he seems, or is it just in Amy's head?

It wasn't John's fault. Not at all. And Sherlock didn't blame him. The man couldn't possibly understand. He couldn't know what bringing the red-haired puppy to Bakers Street would do to the detective. He couldn't understand what Redbeard's death all those years ago had put in motion. That dog's death was how it all began.

What if one morning the Doctor and Sherlock Holmes wake up and realize they've switched bodies? Can they stop the switch from continuing to happen? How does this affect their friends? Now they must travel across universes to find each other and set things right.

Once upon a time there was a young man who lived alone in his clock shop in Storybrooke, Maine. He planned to spend the rest of his life quietly tinkering with his clocks, but then he met Henry Mills and his life began to collapse as he realized that his life was a lie. His memories are false. He isn't even human.

"Now I have the revenge I've always desired." Morgan murmured, a sly smile resting in the curve of her crimson lips. "They will never find their way back. Every person who ever stood against me, I stole their memories, their identities, and threw them into an unknown,frightening place." The servant looked up. "Where's that, M'lady?" "The twenty-first century."

Sherlock is investigating several murder sites, but all of the bodies are missing and the evidence seems to say that the victim isn't staying dead for long!

The Doctor is feeling sad between visits with Clara, and the TARDIS guides him to a hallway inside her where fictional characters are allowed to live in 'real' life. Follow him as he has conversations with fictional characters from books, movies, TV shows of all sorts. This rightfully is a crossover, but there are too many to mention them. Tell me who you want the Doctor to meet!