Marina Abramovic is a performance artist based in New York. She recently did a performance piece sitting silently in a gallery. Random people sit across from her, staring. A lot of them started crying for no reason at all.
Wikipedia: "From 14 March to 31 May 2010 a major retrospective and performance recreation was displayed at the Museum of Modern Art. It was the biggest exhibition of performance art that the MoMA has put on in its history.During the run of the exhibition, Abramović performed "The Artist is Present" a 736-hour and 30-minute static, silent piece, in which she sat immobile, while spectators were invited to take turns sitting opposite her. A support group, "Sitting with Marina" has been established on facebook. In late May, a Twitter account (@marinaschair) was established personifying the chair used for the entirety of her performance".