This weeks pick is DocScanner, an iPhone app that allows you to have a flatbed scanner5 in your pocket. While DocScanner isn't the most pretty or well designed iPhone app, it certainly doesn't lack in the feature department.
Notable features include both really good edge detection, OCR and WiFi sharing. There exists quite a few scanner apps on the App Store but this one is definitely the one to get.
On a recent business trip I used DocScanner to keep track of all the receipts I accumulated during the trip. Back home I exported them all to one huge PDF file and emailed it to our accounting department. No need to fiddle with those old school analogue receipts anymore.