The best acoustic guitar recordings??

Mark Selby, "and the horse he rode in on". Terrific music played on his '74 Mossman, and well recorded from inside his living room. Heard Mark and his beautiful wife Tia do some of these cuts live at a friend's home. Listening to him playing, "A Whiter Shade of Pale" right now ... goosebumps.

http://www.amazon.com/Horse-He-Rode-Mark-Selby/dp/B000EHRXKE/ref=sr_1_6?s=music&ie=UTF8&qid=1345557651&sr=1-6&keywords=mark+selby

A bit obscure, but the Melbourne Guitar Quartet's Toccata is superb

A hearty second to Edorr's recommendation of Ralph Towner and Egberto Gismonti on ECM. I am especially fond of Towner's work in Solstice and Gismonti's recording, "Silencio" with Charlie Haden.

Also worth checking out are recordings of various Robert Fripp projects (e.g., League of Crafty Guitarists).

Richard Thompson should be mentioned, although I'm not all that big a fan.

Jerry Garcia and Dave Grisman "So What"....
an incredible acoustic set of Miles Davis' "Kind of Blue" album, transcribed for guitar and mandolin. It's really good stuff.

This one features solid (if unremarkable) SQ, but insane playing:

Tommy Emmanuel "Little By Little"

For a taste, click here ...

http://www.youtube.com/watch?v=S33tWZqXhnk

Marty