According to a study by Caltech & UCLA there is one nerve cell in the human brain that reacts to pictures of Jennifer Aniston, and only Jennifer Aniston. There is another one that responds to pictures of Halle Berry - even in her Catwoman mask!
Isn't that just crazy; just think, millions of nerve cells and each one responding to just one person...
(from Feb.2014 National Geographic)
(those 2 neurons are working overtime now, aren't they?