For some folks, the global following of “Lord of the Rings” — the J.R.R. Tolkien books, the Peter Jackson movies, the, for lack of a better word, Middle-Earth lifestyle — is almost akin to a religion. In the words of one of the more intense fans (known as “ringers”) interviewed for “Ringers: Lord of the Fans,” a serious, at times goofy, yet always affectionate exploration of the history and cultural impact of “Rings” out on DVD (PG-13, Sony, $24.96), the phenomenon goes “beyond regular movies or fandom or geekdom.” [Full Story]