Windows that double as a home entertainment center. As the article describes, "A low-voltage current runs through the window. When the current is on, the window is clear. Turn the current off and the glass goes opaque for use as a projection screen for television or DVDs. Flanking casement windows become the speakers... 'The transformation is pretty startling,' said Sandy Isenstadt, a professor of architecture at Yale University. 'One minute you're looking out your bay window at your neighbor's backyard, and the next you're watching Tom Cruise and Top Gun.'"