I think I really would have enjoyed this piece by Marina Abramovic at MOMA in 2010, even before this incredible moment.
The man's name is Ulay and he was the artist's lover and collaborator for many years before they decided to end their relationship in the late 80s. To properly honour their relationship their break-up involved them walking from opposite ends of The Great Wall of China and the meeting in the middle to hug, and then part.
Although they saw each other in the years between, she did not know he would be at this performance.
Just beautiful, honest and truly moving.
Discovered through whoorl.