ScanR: Cell phone as business card scanner
ScanR processes and manages pictures of documents and whiteboards that you take with your cameraphone. It's not for people or scenery, just documents: It de-skews images and heightens the contrast, and runs character recognition on the resulting images so you can search the text on your images. See previous coverage.
At DemoFall today, the ScanR team is introducing business card scanning: You snap a picture of a card with your cameraphone, send it to bc@scanr.com, and the ScanR service creates a VCard with the contact details that you can export to your contact manager. I've used business card scanners in the past, never with acceptable results. It'd be quite a trick if ScanR, using cameraphones, could do a better job than dedicated scanners.