Fallout: Equestria is now up to Chapter 36.
<a href='http://www.equestriadaily.com/2011/06/story-empty-room.html' target='_blank' rel='nofollow'>The Empty Room</a> seems to be going for something epic. The primary mystery is about a room next to Celestia's that was hidden from all, including Celestia, only to be discovered by Luna. It seems to be a child's room....
The early chapters are a bit rough, but interesting.
Edit:
<a href='http://www.fanfiction.net/s/7171004/1/My_Little_Pony_FiM_The_Romancing_Quest' target='_blank' rel='nofollow'>MLP: FiM The Romancing Quest</a> - an interesting story of Twilight trying to get a feel for romance. But, of course, her friends have differing ideas on who she should be with and want to help....
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And now, in case my fellow Bronies haven't found these on their own, here's some music videos:
<a href='http://www.youtube.com/watch?v=2Tjb14VoWjg' target='_blank' rel='nofollow'>Ponies The Anthology</a> - WARNING: contains foul language and a few lame songs.
<a href='http://www.youtube.com/watch?v=B2RJwVtZNYo&list=FLv17-IoffPME&index=1' target='_blank' rel='nofollow'>Ponies The Anthology (clean version)</a> - For the little Bronies or for people who don't want to hear that obnoxious "Fuck Shit Stacks" song in the non-clean version.
These next few are techno-remixes
<a href='http://www.youtube.com/watch?v=PLjpTtxH4Jo' target='_blank' rel='nofollow'>Pinkie's Lie</a> <- There's a remix called "Insane" which basically takes this song and repeats it for 14 minutes if you like this version. Personally, I CANNOT STOP LISTENING!
<a href='http://www.youtube.com/watch?v=0clN27DID7s&list=PLECA18257AEC83CC5&index=156' target='_blank' rel='nofollow'>Avast Fluttershy's Ascot</a> <- A softer techno song made from Fluttershy's voice clips. Some versions of the song use "Ass" instead of "Ascot" if you're looking for similar remixes.
<a href='http://www.youtube.com/watch?v=JgBwOILNCxk&list=PLECA18257AEC83CC5&index=157' target='_blank' rel='nofollow'>The Best Party (Pinkie Pie Remix)</a>