We haven't watched network TV for2-3 years. After noting that most of the evening dramas were about who the main character was going to sleep with next, and how it completely went against our morals, we just stopped tuning in to everything. For the 1st year we mostly watched and rewatched the DVDs in our small (less than 50 )collection. Then we decided to try Netflix. We LOVE streaming one episode after another, and no commercials.
The down side is that the most recent seasons aren't available, and we've rented most of the new release movies from our local library (for $1 per week) before they are released on Netflix. We haven't looked into streaming from the computer the newest episodes of our favorite programs (Top Gear, American Loggers, ect) but there is so much to watch, we just go to the next thing in our instant queue and wait for the updates of new programs on our favorites.
I should mention that we do have local programming on our TV, so we can catch the news if we want, or check the weather, but we rarely do. Even the news isn't fit for young children.