If your opponent is standing, stand taller. Wear thick-soled shoes. Stand on tip-toes. Stand on chairs if you have to. Another effective gesture you can make that increases the power of your presence is to make a fist with one hand and ominously punch the open palm of your other hand.
Old movies are all boring and stuffy.
That's just because you have no sense of taste. Modern action flicks have dulled your brain. On the contrary, Laurence Olivier, for example, is one of the greatest actors of all time. Old movies suck, and Laurence Olivier was a poser. Biting Biting is a last ditch effort.