hi pete - here are a few of the names i mentioned - 

Rebecca Horn. kinetic sculptures that draw (sometimes)

http://www.rebecca-horn.de/pages/biography.html
http://www.youtube.com/watch?v=9ddqIN-8H9g&amp;feature=related

the Brothers Quay: animators / stop-action / who worked with Stockhausen 

http://www.myspace.com/video/gaspar/brothers-quay-street-of-crocodiles/42716807
http://www.horschamp.qc.ca/new_offscreen/quay.html

Peter Cusack. Sound artist / researcher / CRISAP
http://www.petercusack.org/

Alvin Lucier. Composer/sound artist, best known for work with resonant frequencies -
http://www.ubu.com/sound/lucier.html

Yannis Kyriakides. Composer electro-acoustic music
http://www.kyriakides.com/