The Twi Hards will be there. Probably already are. The latest installment of the “Twilight” film series opens at movie theaters tonight for midnight showings. “The Twilight Saga: Eclipse” is the third film in the series. The film is pretty much the same as the previous films, with the same familiar characters. Reviewers say the film, rated PG-13 for intense sequences of action and violence and some sensuality, is the most romantic of the three films. It makes its nationwide debut after the sun comes up tomorrow.