check out this cool map of surveillance cams in New York City.. http://www.appliedautonomy.com/isee/
iSee is a web-based application charting the locations of closed-circuit television (CCTV) surveillance cameras in urban environments. With iSee, users can find routes that avoid these cameras – paths of least surveillance – allowing them to walk around their cities without fear of being “caught on tape” by unregulated security monitors.