iPhoto and Face Recognition

I probably commented on this before, but I went back to iPhoto09 and was working with a library full of scanned images and thought I'd pass this on.

I have been scanning in photos and have concentrated on family 
and friend photos so far.  Then I thought I would use Faces to put 
names to people.  So did so with a few people.  When I went to 
Confirm Name for our daughter, it pulled up a whole bunch of photos 
which, indeed, did include her.  And those which did not included me, 
my husband and/or our son...meaning there's evidently enough identity 
points to find the similarities.

It gets really interesting when you have exhausted Confirm Name and 
it starts picking out faces of others in the family or among friends 
and you can, sort of, see some features which are similar.  All and 
all a good timesaving feature and fun to boot.