Ear Candy: Most startling recordings.

Anything by Yello. Their CDs still stand as some of the very best technical discs you'll find, and the stuff on'em is pretty good, as well. A "must" for any CD library.

Nautilus's vinyl pressing of Neil Young's "Harvest". Try to find one used, cue it up, and prepare to be startled.

Two LP's come to mind: an old Riverside recordings called "The Sounds of Speed", which included stuff like the world-record land speed record by Mickey Thompson; steam locomotive going by; etc. It's long out-of-print, but if you can find a decent copy I guarantee it will wring out your audio system. The other LP that comes to mind is Keith Johnson's recording on Reference Records called "Astounding Sound Show" (or something close to that). It contains 7 cuts from various recordings he has done, and several are really startling.

The new Steve Earle, Transcendental Blues is a very good recording.

Pink Floyd: Ummagumma, Atom Heart Mother