My blog's popular today, so let me expand on an older essay of mine I never blogged before, concerning my new style of watching TV, thanks in part to my Tivo hard disk recorder.
In the past series-based TV has made its money by the series getting fans which watch it every week. The fans watch the good episodes and they watch the bad. As long as they get enough good episodes (or very rarely, all-good) they continue to watch the show. Advertisers buy space based on the popularity of the show (though they pay based on the ratings it actually gets.)