What was one of the best live concerts you've ever seen?

I know this question has been asked before but I think not for a while. I saw James Taylor and Carole King at the Garden last night and it was amazing. Surprisingly warm and personal for such a large venue, great chemistry and charm – Carole King can still really rock – and a great backup group of musicians that have played with them for years. Most – if not all – of the songs brought me back to specifc “places and faces” and seeing their ages reminded me of my own. What were some of your favorites and what made them great?