Ah! Megami-sama

Keiichi Morisato is a good-natured, yet hapless and girlfriend-less college freshman who is often imposed upon by his elder dorm-mates and brow-beaten into taking phone messages and doing miscellaneous chores for them. One day, while alone in his dorm, he accidentally calls the Goddess Technical Help Line and a beautiful goddess named Belldandy materializes in his room. She tells him that her agency has received a system request from him, so she has been sent to grant him a single wish. Skeptical and thinking someone is playing a practical joke on him, he wishes that she stay with him forever. To his surprise, his wish is granted. Belldandy must stay with him, but as his dormitory is strictly male-only, they are both forced onto the street.

They set off on his motorcycle to find alternative shelter, eventually seeking cover in an old Buddhist temple. In the morning, they are greeted by the temple's sole inhabitant, a young monk, who welcomes them and gives them permission to stay until they can find permanent lodging. He immediately puts them to work maintaining the temple grounds, but when he sees Belldandy use her powers to save Keiichi from injury, he begins to fear that she may be a demon or sorceress. He is eventually convinced of Belldandy's intrinsic goodness when he witnesses her solicitous care of the temple premises and her perfect meditation ritual. When he decides to go on a pilgrimage to India, the priest gives the couple permission to remain in the temple so long as they continue to maintain it.

SOURCE: http://en.wikipedia.org/wiki/Oh_My_Goddess!

"Ah" or "Oh"?
Translating the original Japanese title of ああっ女神さまっ (Aa! Megami-sama!) proved to be problematic. Indeed, Fred Patten, in writing the preface to the collection "Watching Anime, Reading Manga: 25 Years of Essays and Reviews", stated that fans were still debating whether "Ah! My Goddess" or "Oh My Goddess!" should be used at the time of writing, approximately 15 years after the first Oh My Goddess! manga was published. When the United States anime import company AnimEigo obtained the original video animation (OVA) rights, they titled the series Oh My Goddess!. This approach was also followed by Toren Smith and Dark Horse Comics when translating the manga. Released in concert with the OVA series in 1994, Smith has since stated that he saw the title as a play on "Oh my god!", and thus he felt that there was no problem when translating it. Smith confirmed that his interpretation of the author's intent was correct by consulting with Fujishima. Nevertheless, Kodansha's bilingual release of the manga used Ah! My Goddess, as did Pioneer in their North American release of the film. and the 2005 Media Blasters' DVD release of the TV series.

When asked about the issue in Animerica, Fujishima stated that "Oh" was closer to his intent, but acknowledged that the title should be rendered so as to make sense within the country that it is published, and specifically stated that films may warrant different titles than other works ("After all, there are movie titles that work much better after they're changed ..."). He did, however, state that he would prefer to see consistency between the titles of the manga and those of the animations.