Data sets with addresses, etc:

http://aws.amazon.com/publicdatasets/

http://www.manifold.net/updates/product_downloads.shtml

http://www.gsd.harvard.edu/gis/manual/realestate/index.htm

http://www.ibm.com/developerworks/xml/library/x-geomap2/index.html

http://www.gearthblog.com/blog/archives/2006/06/huge_database_u.html

Free data set generator, including names, addresses, phone numbers, emails, etc. Not real-world data, but probably pretty close and much easier than creating your own script...

Demo: http://www.generatedata.com/#generator

Download: http://www.generatedata.com/#download