This is the future
According to this article, a team at HP Labs have developed a new circuit element (the memristor). I'm not really into physics, but basically it allows persistant storage of data: if you flow the charge in one direction, the resistance increases, if you flow it the other way round, it decreases.
I won't detail more than that, as the article and its comments give a lot more information that I'd be able to. From times to times, I read something and I just think we're living in the future, this will be everywhere, eventually.