On Thursday, November 10, the earth shook a bit more than usual in dear old San Francisco. And I’m not referring to that troubling rash of tremors we’ve been dealing with over the last few weeks. No, I’m talking about the kind of shaking that can only be attributed to a pack of stampeding Twi-hards barreling toward an opportunity to personally accost one of their big-screen idols in the flesh. And the Breaking Dawn Cast & Concert Tour, which came to the Fillmore last week, provided them with one such rare occasion. As a red carpet novice who recently tasted blood and was eager for more, I decided to subject myself to this spectacle in the name of…adventure? Journalism? Bragging rights around 12-year-old girls and the mothers who brazenly steal their Twilight books? Hard to say. But I did it. And it was an eye-opening and occasionally overwhelming glimpse into one of the most powerful and efficient machines in American culture.