Looking up at someone for power and dominance?

I remember one time David D talked about a mentor of his who use to look up at you, lean his head back and sort of stare you down. Seems like it's a body language power play. Here's an example fresh off the Internet press. Hillary Clinton is doing it in this picture. This must be a universal body language principle that exudes power and dominance. I also have personal experience with a long time friend who does this, and he has literally been with hundreds of women. So this must be a very concrete principle that works every time.