LOL. Found this video of Miku-chan! It's hilariously cute!

And some other info, too, thanks to niconico774 from www.youtube.com! Enjoy!

"Hatsune Miku" is the first character in the Vocaloid Character
Voice Series released on August 31, 2007.

The name of the title and the character of the software was
chosen by combining Miku (Future?), Hatsu (First?), and Ne (Sound?).[citation needed] The data for the voice was created by actually sampling the voice of Saki Fujita,a Japanese voice actress.

Unlike general purpose speech synthesizers,
the software is tuned to create J-pop songs commonly heard in anime,
but it is possible to create songs from other genres.