From Homespun: DADGAD tuning for American music

Guitarists who play both American and Celtic music should be interested in a new release from Homespun, the leading producers of instructional videos for the bluegrass instruments (and others). Al Petteway presents Appalachian fingerstyle guitar in DADGAD tuning, with songs and tunes familiar in the old-time and bluegrass repertoires.

Full details are here. Check out also the Homespun Instant Access delivery system, introduced last month, which among other features enables the user to slow down the video without affecting the pitch of the audio.