My reactions: am actually surprised. I have watched trailers to book adaptions and loved them, only to watch the movie and go "Oh God! That was awful!". So, while I am very surprised over how good this trailer is (the CGI [the door and demons!], the accents, the "Mom, I'm coming home!"-"No, no, no! You can't come home. You understand me. You don't come home!" exchange [very Mother/Daughter] , I am going to keep an open mind over this movie till I watch it (although I do want the Infernal Devices trilogy to become a movie series. That would ROCK!).
But there's one thing that bugs. Just one thing. The runes! OMG, the runes! There meant to be tattoos but they look like make-up and those temporary tattoos you get when you were a child! They don't look like tattoos!