I would love some suggestions on great acoustic...

Slack Key Guitar Volume 2
Www.palmrecords.com
10 different guitar soloists .... very highly recommended .... one of all-time fave of all of these.

A Unique Classical Guitar Collection. CD 22062
Opus 3 stereo/ hybrid SACD cd made in Germany
Stockholm guitars Quartet performing Bach, Mendelssohn-Bartholdy, Brahms, Debussy,
Also solo performances

Ottmar Liebert Nouveau Flamenco
Higher Octave Music

The last one is a electric guitars duet that leaves most guitar fans gobsmacked;

Chester and Lester

Cher Atkins and Les Paul as duelling guitar soloists backed up by the best in Nashville

Outstanding!

RCA Nashville / Legacy American Mikestones series
Www.legacyrecodings.com
Sonybmg.com

Akg_ca's recommendation of Chester and Lester reminded me that the album "Neck To Neck" by Mark Knopfler and Chet Atkins is really good also.

Nils Lofgren Acustic Live

Good Listening

Peter

Joe Pass
Ry Cooder
Barelli Lagrene

You didn't specify a genre, so this list is a little far-ranging, but they're all marvelous.

Earl Klugh (Solo Guitar and Handpicked are good choices)
Laurence Juber (take your pick, Guitarist is good)
Joe Pass (Songs for Ellen)
Henry Mancini -Pink Guitar (various artists, will give you another dozen guitarists to explore)
Antonio Foriconi (Touch Wood, Meet Me in London or Acoustic Mania)
Groovemasters...about a dozen volumes in this series of acoustics guitarists playing duets
Carlos Barbosa-Lima and Sharon Isbin...Rhapsody in Blue/West Side Story (simply superb). Barbosa-Lima has some terrific solo albums as well (Impressions and Music of the Americas come to mind)
Los Angeles Guitar Quartet (take your pick, I like Spin)
Acoustic Alchemy
Tony Rice (Native American and Tony Rice Sings Gordon Lightfoot)
Christopher Parkening (Parkening Plays Bach or Simple Gifts are great, Jubilation is an undiscovered treasure)

boy, there are tons more, depending on what types of music you enjoy. Happy hunting!