I just had a brain fart!
Remember those IONIC BREEZE units that they sell at "Sharper Image" and other places. They use charged plates to move air around and collect dust.
WELL has anyone ever thougth about getting a used one of these and cutting it down to fit right in front or behind a PSU to provide airflow for it? IT would take some tinkering to make it work correctly and there are NO moving parts.
Just an idea for those of you who MUST get rid of every fan in there computer.