FYI - as GIS applications mature, I'm sure we will begin to see more of this open to the public (at least domestically):
The Chicago Police Department developed this web application to provide residents of the City of Chicago with a tool to assist them in problem-solving and combating crime and disorder in their neighborhoods. It is based upon the CLEAR (Citizen Law Enforcement Analysis and Reporting) system developed by the Department for use by its police officers.

This web application enables you to search the Chicago Police Department's database of reported crime. You will be able to see maps, graphs, and tables of reported crime. The database contains 90 days of information which you can access in blocks of up to 14 days. Data is refreshed daily. However, the most recent information is back-dated 7 days from today's date.

The site can be accessed at http://gis.chicagopolice.org

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