Watch Hendrix's "Star Spangled Banner" at Woodstock. At the start he is doing some hammering and feedback stuff, while holding a peace sign with his right hand. A classic image. I was actually thinking of when you're singing,w hich I do a bit of sometimes without actually playing guitar. I don't really do that sort of thing, but as a U2 fan I always laugh when Bono does his passionate look and holds out a hand to the audience. Classic cliched pop singing. I do it someitmes when I have friends wathcing, just as a bit of a joke. Same with doing as much as possible with my left hand on the guitar while holding my right fist up. It just looks so funny. It's like "yes, I am THE MAN".