Who Am I? Where Am I? Just Ask iPhoto.

Apple's new iPhoto will tell you.   iPhoto 09 incorporates face detection and geo tagging technology.  Yes, it actually recognizes faces in your images and allows you to assign names to the faces.   The software then searches for cases of the same face throughout your library.  It's not perfect, but by confirming the face, I'm sure the program learns over time.  

Geo tagging has been heavily integrated into iPhoto 09.   Photos can be organized by place and even plotted on a Google Maps interface.   And what about all those old photos?  You can go back and assign the locations to old images and iPhoto appears to update them on the maps.   Apple also was touting the ability to integrate maps within photo books - pretty neat.  I'm not sure I'd want to spend the pages on a map, but you never know.

Geo tagging technology is very cool.  Unfortunately, few cameras have the hardware.   Only one Nikon point and shoot camera has an integrated GPS.  The new Nikon DSLRs require an add on device for a few hundred bucks.   Of course the iPhone has geo tagging as well.   But the iPhone camera is probably the weakest function on the entire phone.   Probably the best option would be to take some snapshots with the iPhone and then transfer the GPS tag to the DSLR photos.  

I'm sure the hardware will catch up soon enough.  In the meantime, this should give Apple time to include some variation of these features in Aperture.  Currently, you can only add the GPS tag itself - no maps.