Don’t know why the show is called “Black Mirror?” Prepare to be shook.

The show's creator offered an explanation while being interviewed a couple of years ago:

“When a screen is off it looks like a black mirror... Because any TV, any LCD, any iPhone, and iPad, something like that, if you just stare at it it looks like a black mirror and there’s something cold and horrifying about that and it was such a fitting title for the show.”

I'm a fan of the show, and had NO IDEA.

You can hear him explain more about the show title's meaning at the 4:30 mark in this vid: