Quick animation created using SFM and After Effects.  I am very new to both programs (this is my 2nd animation ever), so was not expecting perfection.  The manes do not have bones (created pre-V4), so was unable to give them the "blown in the wind" look.

It is based on a 5 second loop, so it could essentially go forever.  If you would like a longer version of the file, let me know and I can put one together.  Took around 6-7 hours to complete from idea to upload.

Inspired by the art of KnifeH - "Scootaloo's Dream"
http://knifeh.deviantart.com/art/Scootaloo-s-Dream-speedpaint-in-desc-308219834

Animated GIF version can be found:
http://argodaemon.deviantart.com/art/RainbowScootFalling-357023477

Featured on Equestria Daily:
http://www.equestriadaily.com/2013/03/sfm-ponies-sliding-into-box-twilight.html