Some TV shows are like really good novels in that there are enough episodes that you start to have your own feelings about how the characters should act. When the scriptwriters go slightly wrong, when they make the character make a left turn that he or she wouldn't do, you know enough about the characters to say, "No, that's not what she would do there. That's wrong." You can actually argue with a TV show in a way that you can't do as much with movie - you inhabit a TV show in the way you inhabit a novel.