I saw Michael Tilson Thomas in Mahler 9 when he was guest conducting here a year or so ago, that was definitely high up the list. I mostly go to operas -- I was at Placido Domingo's 4000th performance, which was in Simon Boccanegra, shortly before his fall from grace. That's definitely one of the better performances I've been to. I can't believe he's physically capable of doing what he does at his age.
