Hi Buffheart.

Here is some information about Myoclonus and Tardive Dyskinesia from "We Move".

http://www.wemove.org/td/
Tardive Dyskinesia

http://www.wemove.org/td/td.html
Tardive Dyskinesia - Definition

http://www.wemove.org/myo/
Myoclonus

http://www.wemove.org/myo/myo.html
Overview - Myoclonus

I'll also post the one for Dystonia.
http://www.wemove.org/dys/dys.html