Sailor Moon was the first shoujo manga to catch on in the United States, and the anime succeeded in part because of organized fan campaigns to keep it on the air. The rights for both the manga and the anime had both lapsed by
1995, 2005, however, so both have been officially unavailable here since then.
Kodansha Comics galvanized fans last spring with the announcement that they would publish a new edition of Sailor Moon as well as the previously unpublished (in the U.S.) prequel Codename: Sailor V. There's no word on the anime yet, but here's an interesting sign: Anime News Network reports that Great Eastern Entertainment has listed four Sailor Moon items for future sale (no prices or details were listed), all bearing a Toei Animation logo. (The page has mysteriously disappeared since ANN posted it, and it doesn't look like Great Eastern responded to their request for comment.) As an alert commenter at ANN points out, Toei, the owner of the Sailor Moon anime, was shopping around "refurbished" episodes at the MIPTV market in Cannes last year. Perhaps someone bit, either there or elsewhere. The fansite Moon Chase reports (from an anonymous source) that there is another deal that has to be finalized at a higher level before the anime can be licensed in the U.S., and they are skeptical about this latest development, but some enthusiastic folks are speculating that an announcement could come as early as Funimation's panel at SDCC.
Judging from the reaction I got when I wrote about Sailor Moon at MTV Geek, there's a huge fandom out there that is anxious to get their manga and anime back. While Kodansha's deluxe-edition manga seem to be aimed at older readers reliving their youth, the anime has a lot of teen appeal, and if it is re-released in the U.S., we could see history repeat itself.