There is an interesting story posted at CNN today that explains how a businessman travelling in Germany was able to use his laptop to nab a burglar that was robbing his house.
He logged on to his laptop and via the Internet saw live images of the burglar at work. He then phoned his wife, who was not at the house but called the local police. "She told us the details about the thief and where in the house he was as we surrounded the house," police officer Americo Rodrigues told Reuters.
That'll teach you criminals to always be on the lookout for a webcam! You never know who might be watching.