Another: The Alloy Orchestra's performance of its Metropolis score at the Winter Garden atrium, during the New Sounds Live silent film fest in 2000. Alloy's music and moves brought that film alive for me (and as a bonus intro'd me to the wonderful world of new scores for silent films). I listened to the New Sounds episode of that performance over and over for years, until it vanished from the archive. Bring that ep back, John Schaefer!
Emily Gertz