An anomaly among tv miniseries. The first season's mix of "Friends. Neighbors. Husbands. Terrorists." is intriguing but the second's composition of Cities Suburbs. Airports. Targets." trips over itself in its effort to remain high minded despite silly scripting. Still, arriving while 9/11 was fresh, and boasting a number of Muslim characters, actors, production crew and consultants, Sleeper Cell is an achievement.