Somewhat related to power and language would be the art of asking for something in such a way that you guarantee an answer of...."YES?"
I am sharing this particular TED TALK for three reasons. Number one, as an enthusiast of theater (and a person who realizes that there is a large dose of theater in every language and literature endeavor) I love this presentation by Amanda Palmer. She is a brilliant speaker and story teller, as well as a pretty good artist in the genre of cabaret-punk music.
Number two, she talks about both the art of asking as well as the art of discovering the RIGHT question to ask. Both are equally important.
Finally, number three, because it is both snarky (love) and entertaining (double love), I think it teaches both the art of presentation to an audience as well as the art of using your language to reach a goal or get what it is you ultimately want (language and power.)
Enjoy, and please share your favorite moments! :)