Some random ubuweb enjoyments:
David Behrman's "Wave train."
Robert Ashley's odd and fantastic video series "Music with roots in the Aether."
Not all great on this page, but Alan Licht's Who-meets-Blondie minimal synth "mash-up" is stellar: "Bridget O'Riley."
Many great pieces on this compilation. Standouts for me include Greg Kelley's piece, Taku Unami's, and a rare Liz Tonne solo.
CC Hennix on The Electric Harpsichord.