It depends on what kind of music you like. One of my all-time favorites is Larry Carlton's "Alone But Never Alone". If your preference is flamenco, then you might want to give a listen to Govi's "No Strings Attached"(somewhat of a compilation of a few of his earlier works) or Jesse Cook's "Gravity". Ottmar Liebert + Luna Negra have some really mellow nouveau flamenco offerings that you might like. If you think that you would like something that might be considered a little blue grassy, try Jerry Douglas playing his dobro guitar on his solo works("Changing Channels"-quite a list of famous accompaning musicians by the way)) or you can catch him playing on many of Alison Krauss' cds. I could go on and on because there are there are many many more guitarists in different genres that are my personal favorites, and these are just a few.
