The star system Omega Centauri was just another oddity on a map to scientists in the not too distant future. However when they found the star was orbiting an earth-sized, earth-like planet instead of a black hole as its motion had suggested, a mission was scrambled to investigate this most unusual of celestial behaviors.

Hamstrung by politics, and nearly crippled before it began, the 'Lone Ranger' mission was reduced to just one crew member and left to his own devices.

These are the logs of Arrow 18 and its lone commander. This information is classified TOP SECRET by the Global Space Agency.

Do NOT tell the princess.

Cancelled, but preserved for posterity.

Archer is not having a good day. He's recently been knocked unconscious and imprisoned by a Fae race, notorious for their animosity towards humans and each other. Instead of cannibalistic Merfolk or mischievous Fairies, he finds... talking ponies. Who want him to be their "friend."

He is sentenced to remain in a small town they call "Eqshana", until he can learn to "live in harmony" with its inhabitants. Unfortunately, a message from his king, Jove V, has turned his prison sentence into a mission of espionage. Now he must escape these no-doubt insidious creatures, and even more importantly, stay sane doing it. Along the way, he will answer one of the most important questions he has ever faced: Is there really nothing to eat around here besides hay?

Shawn Spencer, psychic detective, is a thick-tufted boy genius who ice skates through life on polished blades of snarky eloquence. He has tested himself against some of the greatest criminal minds of his time and emerged victorious... though often through unbelievable luck and not a small amount of bumbling.

Now, he faces a challenge unlike any before. One that will test his mind, his sanity, and his adaptability as he is thrust into the midst of an unfamiliar world and the ponies who populate it.

The Mane 6 face their own challenge, as an old enemy, tempered in the crimes of a much harsher world than theirs, returns to Equestria. It is a challenge they are ill-prepared for and one that only their strange, new, alien friend can help them overcome.

If you could choose, would you rather live forever and stay ignorant, or would you like to see eternity even if it means your death?

An innocent question causes Angelo Gordon to doubt, what should have been the culmination of his lifework. A fit of Thanatophobia later, and he finds himself in a strange world that seems to defy everything he ever learned, and suddenly existentialistic terror is the least of his worries, as he struggles for bare survival.

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Special thanks to Mr.Joshy for proofreading.

We’ve read it all before; human ends up in Equestria, meets ponies, etcetera... but what if it wasn’t the ponies they met and befriended first? What if it was another creature, say... the timber wolves?

After losing his way in the Forest of Dean, Jack Masterson finds himself in the magical world of Equestria with no clue how he can get back. After fleeing from the truly surreal sight of our favourite ponies, he finds himself back in a forest... and this time, he's not alone...

Meanwhile, trouble is brewing in Canterlot as Prince Blueblood works on his latest scheme to ruin the inhabitants of Ponyville. Will he achieve his revenge on the Mane Six, or will he fail yet again?

Not really inspired by anything in particular, so if you see similarities between this and another story, you're probably paranoid, unless I mention any references. Rated teen because the main character, while not based on myself, shares my fondness for swearing occasionally.
EDIT: this story now has a Dark tag, as one of my plot-points took an unexpectedly dark turn. I'm also considering switching it to a Mature content as a later plot-point might get darker still.

Going up to the roof for some fresh air after pulling and all-nighter, our "hero" makes the mistake of closing his eyes for a bit.
When he opens them again, he is no longer on the rooftop in Copenhagen he was expecting to be on... no he's somewhere very different, and extremely unfamiliar.
How will he react? How will the ponies react? Nothing is certain, except for one thing...

He never asked for this.

This story takes place about 8'ish years after the second season of MLP:FiM, the language of Equestria does not match any earth languages (that the main character knows of at least), and the human in question knows nothing of these ponies or the world of Equestria.
He emerges into Equestria on the roof of a building in Manehattan, not the Everfree, not Ponyville and certainly not one of the princesses' bedrooms in Canterlot Castle.

Oh! Spoilers in the comments and all that jazz, not gonna go into a whole spiel about it.

A pianist from Earth is home on a lonely Saturday, getting ready to enjoy his weekend, when he is suddenly summoned to Equestria - only to find himself being held captive by The Great and Powerful Trixie, who plans to use him as a piano-playing slave in her show.

If you came here looking for the sequel, 'The Piano Man: Act II', it can be found here.

I want to visit Equestria the same way a historian wants to visit the past. It would be cool just to look around, but I don't wanna run around touching everything or stay forever. Life is pretty good for me, so ditching it all for something else wasn't very high on my list of priorities. One bonk on the head later though, I've got a bunch of parasites calling me their king. I don't want to be king, though! All I really want is to go home.

Pulled into a strange world where myth and legends are real. Unable to communicate to the native creatures here, or even able to move for that matter... How is a human supposed to adapt to this strange world, or even manage to keep his sanity when he is encased in stone.

Cloudsdale. Bastion of the Pegasi, linchpin of weather control, home to the Wonderbolts. A magnificent metropolis gracing the skies of Equestria. So what happens when an oblivious human starts stumbling around in a sailplane? As they say, hilarity ensues.