In September 2008 a 14 year old boy had been robbed in a street in the Dutch city of Groningen.
After he pressed charges, the police could not find the two responsible for the robbery.Until a few months ago, when the boy found himself and his robbers on google streetview.
He then notified the police who after identification arrested the two.
Personally, I am not a proponent of Google streetview because of the privacy issues but in this case it was good to have them at the right place at the right time.