The Seattle Police Department recently launched an online Crime Map that lets you easily find out how much crime is going on anywhere in the city.

To see the map go here: http://web5.seattle.gov/mnm/policereports.aspx
The map uses icons to indicate the type of crime and the block the crime occurred on can be seen by clicking on the icon.

In order to get details about a specific crime, the police have also posted online crime reports.
You must register and agree to the terms of service to see this information.
Here's the link:

The reports are redacted since many crimes are involved in continuning investigations.