I just learned something that will take some time to process. I had used the "Nyan Cat" before as an example of how alien Japanese culture is. Although I still maintain that Japanese culture really is that alien, it turns out that the Nyan Cat was not created by someone from Japan, but by Christopher Torres, who is from Dallas, TX. The song comes from Japan, but the song is not really the weird part of the video.
This is the kind of discovery that occasionally makes me feel as though I have gone to bed in one universe and awakened in a slightly different parallel universe.