According to this article in the Wall Street Journal (which quotes Nielson), the average home in America gets 189 television channels.
But they only watch 17 channels...the exact same number as they watched in 2008.
Sounds about right. I watch news, sports, and late night comedy. Bridget watches HGTV, the Food Network, and the Learning Channel. Sean watches Nickelodeon and the Cartoon Network. And Tommy & Johnny don't watch television at all. (But they sure do log in some YouTube time)