Anything with Antonio Forcione, the "Hendrix of the acoustic guitar". My personal favorite is "Live!" (on the Naim Label: http://www.thenaimlabel.com/)
Something quite special: Wulfin Lieske, "What about this Mr. Tarrega?" (Tacet 65) on which Lieske plays 7 historical guitars made between 1856 and 1958.
Very good stuff also on Stockfisch Records, master engineer Guenter Pauler being an acoustic guitar aficionado himself (check the samples on http://www.stockfisch-records.de/stckff/sf_stockfisch_e.html )
Enjoy
Karel