Great animation, one of the most fluid, show-accurate MLP animations I've seen. Particularly like the tension in the stretching present scene. Pinkie is great for animation tests, simply because she's the most "bendy looney tunes" character on the show, you can do pretty much anything and it'll still look in-line in the show.
Really looking forward to the .fla rig, will be great to see the animation structure, and there are good odds that I'll make use of it and expand it into other characters.