Ok.. I know this is possible, but I seem to have forgotten how to do it

Its the same concept as the spinning GI rig, but I want to make the light spin on its own access and shine outward. I can't seem to figure out how to keyframe it so the light will do 16 spins in one frame. I know this is doable.. I've done it with hair, etc, but I can't remember how.

Any clues?

Not meant to distract you but here is an option that has produced good results using multipass.
Not quite what you are looking for though I think.

MUFOOF

thanks Rodney.. that should do it.