Colin Freeman's poll on the use of expressions got me started on this. This link will show you what I had in mind:
Strange Attractors in A:M
To animate an object to a "strange attractor" orbit you would have to generate the coordinates of each keyframe position external to A:M since you have to generate on the order of 100 iterations per keyframe to move faster than rock errodes in a desert. So if anybody knows how to import keyframe coordinates into an action or choreography, or how to format a file for an action, I'd like to learn how.
To get an idea about what "strange attractors" are, or at least what they look like check out this website: