Follow Windows 7 mascot Nanami Madobe as she walks you though building your very own PC (extremely quickly), and the wonders of the Windows 7 platform. (Nanami Madobe)
The voices are, of course, in Japanese, but the curiosity factor should be compelling enough.
Nanami is one of several OS-tan personifications, depicting various operating systems as anime characters. The “tan” suffix is a cutesy way of the “chan” suffix, which in itself is a way of rendering affection or adorableness.
Link courtesy of Moetron.