'Tag' who's in the picture?

[lemccoy]

Facebook has a similar feature, which doesn't need to be so complicated.  I just want to be able to have a dropdown list maybe with the usernames so one can select who's in the picture, and have them save that to the picture details.  When you click on member.php information it could show which pictures the person is in. 

Any mods available like this? 

Thanks