Let me start by confessing that as someone who has seen every episode of “Lost” since Flight 815 crashed onto the island in 2004 (or was it?), I have characters that are my favorites and others that bore me to tears. For example, I loathe Jack and the whiney, put-upon way that Matthew Fox plays him, and for contrast, I love Sawyer and how Josh Holloway can make you root for a character you’re not sure you should even like. So naturally, if I know that characters I generally dislike, say Jack or Kate, are going to be the focus of an entire episode, I tend to lower my expectations because more often than not, the episode, for me at least, will just be blah. On occasion, I’m surprised, as I was by last week’s enjoyable Kate-centric episode.