In 1984, author Georgelle Hirliman got a bad case of writer's block and decided that she needed to shake things up, so she set up shop with her typewriter in a storefront so passer-bys can come and interact. Georgelle died in 2010, but a new writer named Lauren DeRosa has stepped up to take her place as Writer in the Window: http://savannahnow.com/accent/2011-03-10/savannahs-writer-window-breaks-out-or-routine - via Everything And Nothing
Something simular is happening these days in Copenhagen Airport where the Danish writer Thomas Aagaard Skovmand will be writing "live" in the airport for the next two weeks- He even has a big TVscreen so passers-by can follow the progress.
"Look! Look! I think she's getting ready to type a adverb. Ohhhhhh!!!!!!!!!"