my list:
Autechre - Piezo (the 2nd half, after the beat stops, sometimes it sounds
like someone weeping...really)
Autechre - Vletrmx21 (duh...) and Garbagemx36 (great 2-minute-ending...)
Squarepusher - Port Rhombus
Aphex Twin - stuff from SAW II
Orbital - Belfast