Excellent story here:
http://www.thefryhole.co.uk/wordpress/2010/04/dont-steal-from-a-compsci/
Bloke gets his phone nicked in a burglary, realises he has web-enabled GPS logging switched on, calls up google street view and directs the police to the house the phone is sitting in. 
Here’s another funny story about a stolen iPhone:
Those stories are great!
Does anyone know if there are apps for a Blackberry that would track the phone? I just got my Blackberry and want to be prepared, just in case.
I think the software in the first story (www.wavesecure.com) is available for Blackberry.
Instamapperis free, however it’s easy to remove and if it isn’t running when you lose your phone (or if it can’t get GPS reception) your screwed.
There are programs like this for the Droid, too. Yay!