Tinsel Korey ( Emily ) and co-star Chaske Spencer, who plays Sam, were in Philadelphia to promote the DVD release of "The Twilight Saga: Breaking Dawn — Part 1." Here are some interviews highlights: Weirdest fan request: To howl. And no, they don't, often suggesting a younger cast member will, though. The franchise's appeal: "We have fans all the way from 6 to 66 and what I think it is, is it br…