Miyazaki's latest masterpiece is called : Ponyo on the Cliff by the Sea. Here's the trailer, followed by the master's interview, all in Japanese of course....
From Wikipedia: Ponyo on the Cliff by the Sea (崖の上のポニョ Gake no Ue no Ponyo?) is an animated film by the Japanese anime studio Studio Ghibli, to be written and directed by famed anime filmmaker Hayao Miyazaki. It will be Miyazaki's eighth film to be made under Ghibli. The plot centers on a goldfish named Ponyo who desperately wants to be a human. In pursuing her goal, she befriends a five-year-old human boy, Sōsuke. It was released by Toho on July 19, 2008 in theatres across Japan.
Ponyo on the Cliff is inspired by Danish author Hans Christian Andersen's Little Mermaid as well as by the traditional Japanese folktale Urashima Taro. The seaside village where the story takes place is inspired by a real town in Setonaikai National Park in Japan, where Miyazaki stayed in 2004. The character of Sōsuke is based on Miyazaki's son Gorō Miyazaki when he was five.
Film's official website: http://www.ghibli.jp/ponyo/
Hayao Miyazaki's website: http://www.nausicaa.net/miyazaki/ponyo/