I'm really enjoying Dave Rawlings' solo debut Friend of a Friend. He's best known as Gillian Welch's sideman/partner, but he's delivered a really solid rootsy bluegrass record here. This clip illustrates his idiosyncratic guitar style, full of on-purpose accidentals (!) :

I'm sure there are other fans on here, but am surprised that the record hasn't received much attention, despite being on the banner advert for a while and having the required beard.