the horizontal billboard dance

I was heading home from the Mission the other night when we saw a crowd of people at the 14/49 bus stop. There was dramatic borderline-circus music, and maybe 150 people standing above the BART stop watching a red billboard across the street, with two women harnessed from the roof dancing horizontally on the side of the billboard, merging themselves with the architecture. I had a chance to check it out while waiting for the bus (which conveniently arrived just as the show was over).
All I can say is I love San Francisco.
http://sfbay.craigslist.org/eve/213686783.html