Plant and Krauss
I'm sure I have mentioned here how much I like the album Raising Sand by Robert Plant and Alison Krauss. I read in a comment on a writer's website that they performed The Battle of Evermore at this year's New Orleans Jazz and Heritage Festival. I had to check Youtube and see if a video exists. It does and it is below. You have to watch it until around the four minute mark when they get to the "bring it back" part. It'll rock your world.
For a little background information on the project you can see an interview with the two below.