I saw this yesterday, thought it was sweet. Kirstin Dunst dancing around and singing to "I think I am turning Japanese" in cosplay in Akihabara. I really like her outfit, I am tempted to cosplay in it.
More into: http://www.figure.fm/post/en/8373/Kirstin+Dunst+-+Akihabara+Majokko+Princess.html
I think they should of changed the song to, ""I am think I am turning Otaku". ;-p