Each network has a different approach to programming the post-Super Bowl slot, with varying results. Two years ago, CBS used its post-Super Bowl slot to launch a new reality series, Undercover Boss. It was renewed, and still continues, so that game plan worked. Last year, Fox used its ultra-valuable time slot after Super Bowl XLV to expose new viewers to an existing hit: its high-school comedy-drama-musical mashup, Glee...