He plays the all-American singer-songwriter Gunnar on "Nashville," but did you know that Sam Palladio is actually British? And Clare Bowen, who plays his love interest Scarlett, is actually Australian. (Trivia!) The two didn't meet -- let alone harmonize together -- until their first day of shooting. And yet, of all the will-they-or-won't-they pairings on "Nashville," Gunnar and Scarlett are the easiest to root for.