Winona Ryder, as a now-adult Lydia Deetz, personally introduces the brand-new trailer to the anticipated sequel Beetlejuice Beetlejuice."Here's a preview," she says, wearing a goth black dress and matching bangs. "Be warned. It's intense."Opening with the first few words of a choral version of Harry Belafonte's "Day-O: The Banana Song," the trailer opens at the funeral of Lydia's