I'm definitely obsessed by Prog Rock. Of my 1200 or so CD's I'm estimating more than 2/3 are in the Progressive Genre. Everything from the old standby's (Renaissance, Genesis, Kansas, Floyd, Yes) to the newer bands (Riverside, Porcupine Tree, IQ, Spock's Beard, Flower Kings) and encompassing some of the avant guard (Magma, Univers Zero), Canterbury (Camel, Caravan, Soft Machine), Psychadelic (Ozric Tentacles, Shpongle, Korai Oram, Gong, Steve Hillage) and International (Banco, CAP, Cast, Amarok, Ars Nova, Ain Soph, Kraan, et. al.,) along the way . I have a lot of jazz as well.
I'd be very interested in hearing what others are listening to. I'm always on the lookout for new music.
Jim in NC