Ever since we moved in to the new house, we've just had a big mirror above the couch. Before we used the room as a den it was staged (for the show) and used as an office, and our TV room was upstairs. We put the TV upstairs because we really wanted our downstairs to encourage conversation over everyone watching a big flat box together, and also because we knew that if we didn't have specific a reason to go upstairs (i.e. to watch television) than we would never use that space.