I absolutely miss the Living Statues. I stumbled on them on my 2001 trip, then again in 2004, which I think was their last year. They used to "perform" outside the Italy Pavilion.
They were just amazing. It was more than just a person in a statue costume - you would swear they were statues - until they moved, and startled you. They interacted spontaneously with the crowd, usually one at a time as someone went up to them. Nothing about it ever seemed rehearsed, and honestly, it couldn't be. I really wish they were brought back . . .