It's rare to encounter a movie this unassuming that manages to renew your sense of optimism about humanity and existence itself. Released in 2006, “10 Items or Less,” written and directed by Brad Silberling, tells the story of an older performer who’s fallen on hard times (Morgan Freeman) as he prepares for a small independent project after four years without work. He crosses paths with Scarlet (Paz Vega), a spiri…