Flutterby™! : Fishing line artificial muscles?

This looks very interesting: ABC Science: Spun fishing line turned into muscle, the approachable article version of Science: Artificial Muscles from Fishing Line and Sewing Thread. Via /..

So... nichrome & monofilament muscles, maybe? Guessing you can't wrap the heating element in monofilament, but maybe wrap the twisted monofilament in the heating element? So much you could do with a super cheap linear actuator...