Yay Suzumiya Haruhi
I haven't read the novels, so correct me if I'm wrong, but that trailer does make some sense to me. It looks to me like Haruhi's making Kyon use one of those chalk mark makers to draw huge symbols to attract aliens. They talk about that sort of thing in episode 1 (not episode 0). They'll get in a bangload of trouble for that.
Again, I just have to say, yay Suzumiya Haruhi