Joe let me know about Edocrab, barcode spelled backwards, from Steelthorn which is a free app that lets you scan barcodes with your camera. Once you take a picture of a barcode you can get online price comparisons, reviews, images, video clips, and more from your BlackBerry.
I could have sworn there was another BlackBerry app that did this but I cannot seem to find it. Still Edocrab is free and gets the job done. On the flip side I barely shop for anything in stores that I could alternatively buy online. For example, when was the last time you bought a CPU or computer part from a regular retail store?
You can read more about Edocrab and download the app at www.edocrab.com