Calling all acoustic guitar fans...

John Fahey-America

Muddy Waters, Folk Singer! This is Muddy Waters, unplugged, an awesome performance, great songs, and impeccable sonics.

There's alot of good classical stuff that you might like (Parkening, Segovia, Gropman...). Also would recommend:

Andreas Willers/Can I Go On Like This
Larry Coryell/Tributaries/ The Restful Mind
John McLaughlin/My Goals Beyond/ or any Shakti
L'Ensemble Raye/Quelques Pieces Detachees
James Emery/Standing On A Whale...
Raoul Bjorkenheim, Nicky Skopelitis/Revelator
Jonas Hellborg/Octave Of The Holy Innocents/Good People
Adrian Legg/Guitars And Other Cathedrals
Zai Ensemble/Oxygen Suite
Tim Sparks/At The Rebbe's Table
Peter Finger/Solo
Benjamin Verdery/Ride The Wind Horse
Richard Johnson, Jud Martindale/Creatures Of Habit
Ralph Towner/City Of Eyes, Sargasso Sea (w/Abercrombie)
Sylvain Luc/SUD
Uwe Kropinski/ANY!!!
Jack West/Big Ideas
Leo Kottke/One Guitar No Vocals, That's What
Christian Escoude/A Suite For Gypsies
Cullen-Manring/Equilibre
D. Andrtova & R. Hladik/Voliera
Robt. Fripp & The League Of Crafty Guitarists/Show of Hands
Bernd Steidl/Psycho Acoustic Overture (maybe a bit of an Yngwie clone)
The Guitar Workshop (Compilation of some GREAT little known british acoustic guitarists on the Transatlantic label)

Masada Guitars - Bill Frisell, Marc Ribot and Tim Sparks playing solo compositions by John Zorn.

Also -- Stephen Stills, Stills Alone. This is just Stills and an acoustic guitar. Stills is in his gritty, swampy, backwater mode, picking his guitar and singing with a whiskey aged voice. Great songs, great picking, and
great sonics. Check it out.