Hi, On a slightly different theme, in the UK, last year there was a silent disco flashmob (think dancing, but without music) at brighton station, in aid of international womens day

http://youtube.com/watch?v=vdhoBgEb5Os

and an even bigger one 4,000 flashmobsters startled commuters at victoria station in london, UK.

http://www.thisislondon.co.uk/news/article-23391632-details/4,000+flash+mob+dancers+startle+commuters+at+Victoria/article.do

Unfortunately, the large numbers and the very unhappy travellers elsewhere around the station meant that the police had to come and disperse them! can you believe it