This script is actually a jiggle transformer. Just have an already animated object selected, and run the script. Works best if the object is a child of another and has no keys of its own. Select the created locator, and loop your playback, you can adjust the numbers in real time, and no dynamic syms are used. Let me know how it works for you. I made it for myself, to use on an upcoming project. BTW there seems to be an error in the way maya calculates acceleration values when the object only move on 2 axis, the tirhd axis gets a very crazy jiggle. As long as the object is animated in all 3 axis (which most animation usually is done) it works fine.
