CCTV today comes with super advance facial recognition function.
Those more advance DVR can even detect human faces in the video and saved as thumbnail image index. With the index, it is very easy to retrieve the required video footage by checking and clicking the thumbnail image index.
But somehow I don't think it can tell the difference between the following individuals.
Macaulay Culkin – Matt Leblanc
Grant Imahara, Mythbusters – Stingy, Lazytown
Cod, Simon Bar Sinister Underdog - John Kerry
Madeline Albright – Roz
Michelle Obama - Toy Cymbal Monkey
Baby Alien – Richard Branson
Photos from snarlingmess.blogspot.com