No, this is not a review of iLife ’09…, or iPhoto. There are already plenty out there. 
Instead I want you, me, us, to think about how that face detection thing can change the way we work. I played with it a bit and while it is not perfect (according to iPhoto my girl friend looks like a guy as soon as she wears a hat…) it shows promises and it is a first step in the automated meta-tagging world. 
As a photographer, I tag all my pictures with at least 3-4 tags: the location, the subject, the dominant color (if any) and the activity (if any).