This fall's coolest accessory is not a trophy handbag, a designer shoe or a pair of skinny jeans. It's a computer program sitting right there on your desktop.

Sure, you use your Microsoft Excel to track business expenses and create spreadsheets by day. But legions of Excel-literates are databasing their lives, charting their wardrobes, dinner-party menus and DVD collections by night.

My only lament is that there's no link to the canonical post about people geeking out in Excel.