For all you non-Mac types, Microsoft has just released a new tool called 'Microsoft Photo Info. It runs on both XP and Vista, and is designed to enable quick and easy viewing and editing of photo metadata in explorer. Right-clicking on a photo in explorer shows a new context-menu item 'Photo Info' that launches the dialog shown here. This works on both single and multiple selections, allowing you to view and edit important metadata values. Cool feature: the tooltips in explorer are enhanced to show more relevant metadata as well.