If you are into Bluegrass then Alison Krauss new DVD is well recorded visually and audio wise (DTS) plus the musicianship is first rate IMO. No center channel though but with a good playback system you won't notice the difference. Another well recorded concert DVD is the Corrs Unplugged (No DTS). A bit dated (1999) but again well played and the audio and visual is as good as it gets for this type of music.
Good luck
Good luck