First off, the things I don't own.  Consequently, these are all things you should go and check out as soon as you have time!

Stepmania 5: http://code.google.com/p/sm-ssc/
Assertive Fluttershy: http://www.youtube.com/user/AssertiveFluttershy
Assertive Fluttershy's Avatar belongs to Assertive Fluttershy

0:23 - Babs Seed: http://youtu.be/1QfsI77p60Q     Original: Daniel Ingram     BN: MLP:FiM Animation Team     BG: Assertive Fluttershy
2:53 - BooHoo!: http://youtu.be/2JsHgV3jOE8     BN: J-Brony (DeviantArt)     BG: AliceHumanSacrifice0 (DeviantArt)
6:23 - Boooring!: http://youtu.be/xJY6T2MdBmI     BN: Assertive Fluttershy     BG: MLP:FiM Animation Team
10:34 - Luna: http://youtu.be/TggEORj2SWA     Original: Eurobeat Brony     BN: Fire-Natsu (DeviantArt)     BG: BlueDragonHans (DeviantArt)
15:48 - Spin That Record: http://youtu.be/qPxbz0XLUR8     Original: Icky     BN: KeepOnRockingBrony     BG: braukoly (DeviantArt)

Personal Notes:
These are all to be stepped to, not, necessarily, keyed to.
Once I have my new metal dance pad, I'll see about getting some crappy video of me going to town on these songs.  I'll have to do them one at a time, I'm out of practice and fat... at the moment. :)
I tried my best to get some of those credits above, but wasn't successful for all of them, so I took my best shot and put the last person I saw using them.  If anyone knows the actual artists, please let me know.  I'd really like to properly credit everyone.
My pony name is Half-n-Half. *shrugs* just thought you all should know.

Last, but not least.  You gotta share.  You gotta care.
The Assertive Track:
http://www.mediafire.com/?kvp3in8xyb5h9ib