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
"Look! Look! I think she's getting ready to type a adverb. Ohhhhhh!!!!!!!!!"
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.
http://nyhederne.tv2.dk/article.php/id-38463171:smugl%C3%A6s-krimi-fra-k%C3%B8benhavns-lufthavn.html?forside