Here's the dress (and keep reading, this is actually a serious question):
This question about this image has apparently become quite a rapidly spreading meme on the internet. And after conducting my own little home experiment I can see why! My brother an law looked at this image on the same screen as I did and said matter-of-factly that the dress is black and blue. I, on the other hand can't see this as anything but gold and white. I tried this question with a few others with similar results.
So the question is... what is going on here? What is causing this to either appear strongly as black and blue or gold and white?