To give you an idea of how insane it was, at one point I collect ALL the nails, screws, small metals tools, etc that had been collected in various jars and drawers throughout the house, and organized them in a small drawer filing system. The pictures of each drawer are now sitting on my iPod touch, so the next time we're at Lowe's and about to buy another small bags of screws, I can prove where and how many we actually have.
It doesn't end there - all the books in the house have had their barcodes scanned and entered into the MacBook. Every rubbermaid huge plastic container has been indexed and contents photographed. I think it's make anyone with OCD a little weepy.