First, it's a historical drama that is not a fictionalized biography. That alone would get me in the theater. Can't use the "it isn't Tolstoy" argument to fault the story because, well, it is Tolstoy. Anna Karenina. Then stick Keira Knightley and Jude Law in the same movie, produced by Working Title no less...yeah, I am going to be in that theater seat multiple times. All I ask is that they not mess with the ending. Please please please please. Not the happiest of endings, but I'm a proponent of staying true to the work.
Not getting on that soap box today, as time's a-wasting, so I will leave you with this gorgeous trailer from FilmTrailerZone. Will you be watching?