Memorial Day seems like a terrific time to revisit a strong "Friday Night Lights" episode--"The Son." This is the one where Matt Saracen learns that his dad (a soldier) is dead. "Friday Night Lights" had a slightly frustrating habit of treating characters as pawns, and the reemergence of Saracen's dad--at this particular moment--felt a little bit convenient. Even so, the hour is thrilling, because it explores ambivalence in ways that feel unusual for TV. No one mourns when Gus Fring dies on "Breaking Bad." Everyone mourns when "the quarterback" dies on "Glee." In "Friday Night Lights," Saracen's dad is neither great nor truly terrible, and, in a way, this makes his death especially painful. Matt has unresolved anger. He doesn't know what to do about that. Matt's private crisis leads to one of the most exciting scenes I can remember from TV Land. The Taylors have invited Matt for dinner, and Matt is i...