I already watch some shows on the internet. My wife and I like Survivor, and my work schedule does not allow me to see it, so we watch it later on my monitor - which is not too bad - 22" flatscreen. I have considered just mounting a larger TV above my desk instead of a monitor and then we could just gather to watch it there - but it is not too comfortable that way. But the current TV is just 20 feet away and could be linked with an ethernet cable easily if it were compatible.
Of course there is the expense of a larger tv - which would be fairly quickly dissapated with time. We have reduced our cable to the minimum service as far as TV portion goes. We have the internet bundle including phone. If I dropped the phone and went to that 'majic jack' phone that they advertise, we could cut out quite a bit of expense and still keep high-speed internet.
I am thinking seriously of doing it - just haven't decided yet.
Jeff