Best Concert DVD


Now that I finally have a pre/pro (Krell Showcase)that does justice to music, I have been snapping up concert dvd's.

Now I'm looking for recommendations. Which concert dvd's do you find exceptionally well done in terms audio and video fidelity? Which ones were the best in terms of the artist's performance?
kinsekd
No one mentioned Roy Orbison's "Black and White Night". Although its not in color its a stunning concert with many great muscians playing with Roy. The sound is excellent.

Also, Eric Clapton's 24 Nights is very good.
Just finished watching the Dixie Chicks in concert. If you have an interest in C&W, you owe it to yourself to check it out.
I only own one so far, New Order 511. Based on the quality of both audio and video I will be buying others. For New Order/Joy Division fans this is a great DVD. They play a great mix even going back to the JD days including Tansmission, She's Lost Control and Love Will Tear Us Apart.