Princess Celestia had a good day. Luna had been going out more often and was becoming quite fond of nightclubs, her dear niece Cadance had formally announced her pregnancy—though, privately, Celestia felt she was too young to be a great aunt—and, of course, Twilight, her beloved former student, had taken on her first student and Celestia couldn't be prouder! Yes, it had been a good day.

Celestia Sol woke up much like she did every day the morning: sun waking her as it danced upon her eye lids. Wait, the sun? Celestia's eyes snapped open to reveal she was in Twilight's old room in the observatory. On the other side of the room was a smaller bed where a small dusky unicorn was drooling on her pillow.

Clearly, it must be Tuesday.

Preread and edited by Stahl, Kinsley, and Jumbled

At the end of the movie Back to the future. Marty Mcfly is left by Doc Brown in his time train , Marty realizes he has got to find his friend, he finds a machine that sends him across the universe and drops him in the Tardis from doctor who, The Doctor and Marty try to find doctor brown who gives them a tour of the new time train. Which sends them bouncing between dimensions. Picking up friends like Twilight Sparkle and Ditzy Doo to help save the universe from collapsing within its self.

An accident in the lab sends our favorite boy genius to Equestria, as a pony. What will he do and how will he get back? The answer: Science! (Cover Art Updated!)
New FAQ! and TV Tropes!
Planned Phrases from Dexter:
“Pinkie Pie! Don’t push that Button!” /to Pinkie
“Please, Magic is the word simpletons and the ignorant use to describe what they cannot understand.”/ to Twilight
“No, I didn't strap a rocket to you. I strapped you to a rocket.” /to Rainbow Dash
“Friends? Who needs friends?”

Dexter is a boy super-genius with a disdain for anything girlish and no desire for friendship. After an mishap in his lab, he gets stuck in Equestria. How will he cope with the over-friendly ponies, and the girlish everything?
For any who do not know Dexter's Lab: http://en.wikipedia.org/wiki/Dexter's_Laboratory
[RIP Christine Cavanaugh: 8/16/63-12/22/2014] - Dexter's Original Voice Actress

Twilight Sparkle broke time when she got her cutie mark. Now Twilight and Sparkle are sisters from another time. Twilight is hailed as the potentially greatest light magician of all time, and already has a reputation as a hero by the time she goes to Ponyville. This isn't her story, not primarily.

Sparkle is an orphan - her dark magic killed her parents. She lives with her brother in Canterlot's industrial sector because they can't afford anything better. She can't leave either. She's a natural dark mage; while Sparkle won't go mad like Sombra, her reputation is hardly any better. Worse, the law doesn't see her as a good pony.

The fact that the dead don't stay dead around her, or that Thorn - Spike's double - is an undead, soul-eating abomination, are other matters altogether.

(Also has some Slice-of-Life, but fimfiction tags won't let me put it with Adventure.)

Has an ask blog to go with it: Ask Sparkle and Thorn.
Also has a TvTropes page: Split Second Tropes.

Featured on EQD.

Cover art by Swirling Line.

To be inserted into Equestria, it's a dream come true for anybrony!

Meet the ponies!

Have super awesome magical adventures!

Use foreknowledge to avoid all those silly pratfall moments without screwing things up and causing irreparable harm to the Mane 6...uh...hopefully!

And all for the low cost of possessing Princess Luna, denying her any real freedom or the ability to move on with her life since she's in your head and you're walking around as Nightmare Moon!

Yeah...there had to be a catch in there somewhere, didn't there?

Harry Potter was a lonely boy who one day wished for a friend. Luna, trapped on the moon, wished for the same. And so their wishes are granted. How will the two deal with each other? And what about Nightmare Moon? Needless to say, their lives are going to change in both expected and unexpected ways...

Other stories in the Lonelyverse:
Hooves, Plush, and Magic: The Untold Tales
The Wizard and the Lonely Princess: Hallowe'en Special
A Nightmare Christmas

Chapters 9-11 now re-written.

Cadance didn't know what to expect when her formerly banished Aunt Luna returned from her thousand year banishment. But, she's quite entertained by the hilarity. Especially if it means a chance to play a little joke.

Edited by Habanc. Preread by The Albinocorn, Foals Errand, and Timaeus

Cover art was done by Silfoe and used with permission! In fact, this fic is a gift for her!

Now with Spanish translation by SPANIARD KIWI.

Imagine my surprise when I see a winged unicorn in my kitchen that claims she's my mother.

Imagine her surprise when I threw my coffee mug at her.

Imagine my Dad's surprise when I was banished to the end of Time.

Okay, the last part didn't happen, Tempora is actually really nice, but you get what I mean.

Just roll with it, I guess?

Based on an idea by Rainbow Dragon!

Edited mainly by FlameSwordedLink and now Grand Inquisitor.

Tag updated.

Future Chronicles now HERE
Kayla-verse linked here and in the story.

While lounging around Twilight's castle and airing some friendship-related grievances, Discord stumbles across a magic book containing letters from an inter-dimensional pen pal. As it just so happens, this pen pal also had sinister designs for Equestria, but was quashed by the Elements of Harmony. What's more, she's made amends since that day, and she's now Twilight's friendship student. Eager to bond with someone who can relate to him on a personal level and grow into a better draconequus, Discord packs his bags and heads off to the human world with Twilight's semi-blessing. His mission: Befriend Sunset Shimmer.

However, his plan has a bit of a snag. See, Sunset hasn't been keeping up with Equestrian events, and she never got the memo about Discord turning over a new leaf. As such, she believes that his sudden appearance doesn't bode well for Equestria, Canterlot High, or herself. Not only this, but the Sirens are privy to Discord's return as well, and they see this as a golden opportunity to bounce back from their own recent defeat. Well, Adagio does, anyway. Sonata doesn't want to live in a world that makes no sense, and Aria would rather maintain what little dignity she has left by not getting involved (or so she claims).

So while Discord is trying to earn Sunset's trust and show her what a good friend he is now, Adagio is trying to get in on an evil scheme that doesn't exist. And while that is going on, Sonata is appealing to the Rainbooms behind Adagio's back, hoping that they'll make Discord go away. With so much miscommunication thrown into the mix, you just know that hijinks are inevitable. Good thing Aria made popcorn.

Cover art provided by the amazingly talented Neighthirst.

The humans at the restaurant Freddy Fazbear's are getting tired of having to replace the night guard every week, and go to Canterlot to ask for Princess Luna's help. She agrees to help, but the animatronics aren't expecting a blue alicorn princess to replace last week's guard. Needless to say, they are caught off guard.