I have always really enjoyed pavement art. This year the Sarasota Chalk Festival will be held November 13th -18th. I wish I could be there!
This is the video promoting the 2012 festival. It is interesting to see how many different approaches there are to constructing an image.
Visit the Sarasota Chalk Festival website for another video that interviews a number of chalk artists. (I could not see how to embed the Vimeo video so I assumed those who run the Sarasota Chalk Festival did not want people sharing it.)