I’m a little unsure of how to describe this interesting musical and visual meme currently spreading around NicoNico: I shall have to let the videos speak for themselves, I think. Many characters are represented, but I think the pinnacle is this Konata styled puchi Miku. On to the videos:
The original version; Nico.
This may be an opportune moment to dig out this image:
These videos are called アッーウッウッイネイネ (you’ll excuse if I refrain from transliterating that). There’s many more:
Earlier Ren version.
Gin of Rozen Maiden.
I think that will be enough – you can always find more on Nico or YouTube.