Short of climbing aboard a time capsule and peeling back eight and one-half decades, James Cameron's magnificent Titanic is the closest any of us will get to walking the decks of the doomed ocean liner. Meticulous in detail, yet vast in scope and intent, Titanic is the kind of epic motion picture event that has become a rarity. You don't just watch Titanic , you experience it from the launch to the sinking, then on a journey two and one-half miles below the surface, into the cold, watery grave where Cameron has shot never-before seen documentary footage specifically for this movie.