8. We have one in my room, one in my parents' room, one in dad's office, one in the living room, one in the designated TV room and two in the guest house (one in the main room, and one in the bedroom) We have 9 if you count the one in dad's shop, but it's like 15 years old and barely works anymore. Dad just uses it to listen to the news while he's doing stuff in there.
And the funny thing is, we're really not obsessed with TV. I only use mine to watch DVDs at night (I need movies in order to fall asleep), same with theirs. Dad watches sports on the big TV in the TV room, and the ones in the office, living room and guest house are rarely used. I think their purpose is an excuse to buy pretty entertainment centers, which my parents have a strange obsession with.