Returns: Thursday, April 10, at 9:30 pm (NBC) Number of new episodes: 5 Where we left off: J.D. (Zach Braff) was adjusting to fatherhood, the Janitor (Neil Flynn) got a girlfriend, and the show was in the homestretch of its odds-defying seven-year run. Or so it seemed. What's next: At press time it appeared that a strike-induced contract dispute with NBC would result in ABC picking up the series for 18 episodes next season. On a serious note: "You'll sense a tonal shift [this spring] because we were, at the time, gearing up for the finale," creator Bill Lawrence says. "The characters are kind of real again and the stories have emotional stakes." Kelso (Ken Jenkins) will be forced into early retirement, and the Janitor starts a hospital newspaper.