Who's your favorite acoustic artist?

I play the guitar and just curious on what other guitarists everyone listens to, if not guitarists then pianists cause I play piano too, lol.

I found an artist on myspace, Rachel McGoye. I love her music, she can rock on both the acoustic and piano and she has a unique voice. If you haven't heard of her, check her out! I really like the song "Try Try" off her new album "Beautiful Disaster"