If you could bring back a dead band/musician which one/who would it be?

I would suspect Kurt being back could have an impact on the history of Foo Fighters and its success, so I'm.. conflicted about that one.

Karen Carpenter - mainly because she was such a talented musician and her death so tragic.

I wonder how much good music he had left in him. I suspect it would have been hard to exceed his current music but would have been nice to find out.