The new iphoto comes with facial recognition software. The basic idea is, as you upload your pictures, it identifies the faces in the picture. You can click to ignore it (someone you don’t care about, background people, etc) or you can enter a name. Once you put the name of someone in, iphoto remembers their face. It then looks at other pictures to see if they are present in other pictures. iphoto will then pop up and ask “is this ___?”.
My brother was showing me this new software. His photo library has some of my pictures from my high school graduation. In many of these pictures is my ex-boyfriend, Morgan. While showing me this software, iphoto popped up and asked, “Is this Morgan?” to this picture:

This is what Morgan actually looks like:

Needless to say, iphoto isn’t perfect at this whole face matching thing. (Or is it?)