My friend's Wii was stolen from his house during a break-in a few weeks ago. Since he was my Wii friend, I e-mailed my friend, who was now the thief or someone the thief sold the Wii to, and told him he was a bastard because he stole my friend's Wii.
The guy wrote back tonight telling me he bought it from a pawn shop. So it turns out the thief was dumb enough to take it to a place that's required by law to take a record of the pawned item and its serial number. This guy is going down because my friend can give the serial number to the police even if the current owner of his stolen Wii doesn't cooperate.