The light novel
Chii-chan wa Yuukyuu no Mukou by Akira will be getting a live action movie.
Light novel details:
ちーちゃんは悠久の向こう
Chii-chan wa Yuukyuu no Mukou
Released on: February 5, 2005
Author and illustrator: Akira (日日日)
Published by Shinpusha under their Shinpusha Bunko label.
Official movie site:
http://www.chiichan.net/
A trailer is available for watching here:
http://www.chiichan.net/trailer/index.html
The movie will be released in japanese theaters in January 2008.