New uses for camera phones

There's an interesting story in the Times today about a hospital that is saving thousands of pounds by using picture messaging instead of expensive couriers to send X-ray results to consultants. I've heard of women using camera phones to text a photo of their taxi or mini cab driver or their licence number to where they are going as a safety device. I know someone else who uses them to paint small portraits (you can use the zoom feature to see details like eyeballs while still holding the brush in the other hand) .Any other unusual (tasteful) uses of picture messaging out there? - I'm collecting them for an article.