Alexander Tucker's Portal, especially the track Poltergeists grazing, which I recently downloaded from emusic.com
Loads of tracks by Alio Die, especially the tracks Password for Entheogenic Experience and Sine Tempore Part II, and the Live in Prague 2009 album.
Carbon Based Lifeforms' Interloper
Several cds by Thomas Koner, all from emusic.com, especially Nunatak and Teimo
William Basinki's The Disintegration Loops and The Garden of Brokeness