Looking back on Will Smith’s body of work, it’s clear that he is a more-than-capable actor in both action-oriented (“I am Legend,” “Hancock”) and dramatic roles, and of course, comedic ones (“Hitch,” “Focus”). But in Italian director Gabriele Muccino “Seven Pounds,” Smith is cast against type as a much more tragic character than we’re used to seeing. In Muccino’s 2008 drama, Smith plays Ben Thomas, an IRS agent with a big secret. Ben is on a mission to be of service to seven total strangers in order to pay off a debt of penance. He blames himself for the death of his beloved wife because of some cellphone fumbling while driving. The film attempts to be intriguing by leaving us with questions: Why does Ben set up shop in a run-down motel room? Why does he have jellyfish as pets? One thing is for sure: Much of the film’s lengthy, …