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

This story is a sequel to The Dresden Fillies: False Masks

It's been a while since the girls have seen their good friend Harry Dresden. Discord escaped, Luna attended her first Nightmare Night, the Royal Wedding was crashed by hordes of changelings, and Pinkie Pie threw a statistically improbable number of parties. They tried inviting Dresden, but between his new job and new apprentice, he always claimed to be too busy. The solution was obvious; if he couldn't come to his friends, they needed to go visit him. Besides, they say Earth is lovely this time of year. What could go wrong?

After discovering that Cadence is not who she appears to be, Twilight is sent to another world entirely by the disguised Changeling Queen to avoid her plan being disrupted.
When Twilight lands, she discovers that not only have Spike, Owlowiscious and Peewee followed her, but that they've arrived in a world where the main sentient species is human.
There's still a place where they teach magic, though.
Crossover with Harry Potter. Twilight will be effectively taking the role of Hermione.

I've marked this story as cancelled to reflect the unlikelihood of it continuing. If I do come back to it I'll revert that.

It's been a rough day for Twilight Sparkle. She was awoken in the middle of the night to save the town, had a chance to study an alien artifact ripped out from under her, and is now stuck with Applejack, Fluttershy, and her arch-nemesis Queen Chrysalis in some alien fighting tournament with a bunch of... things she doesn't even want to try and start describing without a cup of coffee and some asprin!

Indeed, Twilight and her friends have been summoned to join the latest Smash Brothers tournament! And as they explore the mysterious 'Smashworld' and meet new, colorful characters, they will be pitted head to head against new friends and enemies as well as each other! Can their friendships survive being forced to fight one another? Why are all the other 'smashers' so on edge? And what's with the bizarre being that purports to be the creator of this world, "the Master Hand?"

Only one thing is for sure. It's going to be a doozy.

A long-forgotten villain escapes from Tartaurus Prison, taking Discord's power with him! Can a motley band of opposites and former enemies work together long enough to save Equestria?

Cover Art provided by the amazing Gina at I AM PONY.

We all know the story of how the Princess’ young student and five friends defeated Nightmare Moon and brought Princess Luna back to our lands. But what if the tale were false? What if the young Twilight Sparkle on the event of her entrance exam had not been rescued by Princess Celestia, but instead lost her mind among the power of her youthful surge and had to be sent away, far away before she could destroy all of Canterlot with her newfound power. Now the feral unicorn prowling the Everfree Forest only vaguely remembers her past, slipping away from constant terrifying attempts to capture her.

And she is beginning to remember what true power felt like.

Editors include: Peter, Justin, Featherprop, Mitch H, and Bad Horse
Featured on Equestria Daily
Reviewed by Chris on One Man's Pony Ramblings and by Paul Asaran on his review blog
Now with a TV Tropes page

Physical books are available on Lulu.com
Monster in the Twilight (Paperback) 272 pages
Monster in the Twilight (Hardback)

"Twilight isn't exactly a social pony." Could win me the Understatement of the Year award.

However, what most ponies don't know is that Octavia, a high-class socialite, isn't exactly much better herself, despite countless rumours about a liason between her and a certain DJ.

Now, drawn back to the upper-classes that she tried so desperately to get away from, can Twilight Sparkle find solace, and companionship, from one of the very socialite ponies of her past that she is so desperate to escape?

An archeologist finds himself pulled into a parallel world by Discord's storm of Chaos, and encounters the mysterious creatures that live there. How will a rational human, confronted by creatures out of mythology, and unable to find his way home, adapt to his environment? Only one way to find out.

Attempting to summon a creature without a Contract is literally gambling with your soul. However, Uzumaki Naruto is extremely lucky when it comes to gambling and manages to summon something that won't kill him outright.

"Sur-PRISE!"
"Gah!"
"Hi! I'm Pinkie Pie."
"Uh... I'm Uzumaki Naruto, future Hokage!"

Twilight Sparkle, Princess Celestia's most prized and faithful student, is being sent to Ponyville to learn about the magic of friendship.

And she's not happy about it.

Hear what Celestia has to say back! Check out the spinoff:
Responses To A Disgruntled Friendship Student by keaton-furman-prower

Still want more? Have a multiverse spinoff by MixMassBasher, my contributing writer for Seasons 5-9.
Letters From Across the Disgruntled Multiverse

Editing by Neko Majin C.

Disclaimer:
The following is a work of parody, and is protected as Fair Use under section 17 U.S. Code § 107 of US Copyright Law. My Little Pony: Friendship is Magic and all affiliated characters are property of Hasbro Inc.