Television is on an antipodal calendar. Spring is here, so it’s autumn on the tube, and season finales are falling like leaves. This week NBC’s Night Court adjourns, with Christine (Markie Post) going into labor stuck in an elevator with guest stars John Astin and Stephen Furst. Fox’s Alien Nation touches down with a plot that has an ugly human-supremacist group killing prominent Newcomers. NBC’s Hunter goes off with an episode that sees Fred Dryer back in uniform (52 long), pounding a beat; it marks the departure of female lead Stepfanie Kramer after six years by the familiar expedient of marrying her off. We now resume regularly scheduled programming.