For decades, there’s been a clear delineation of roles in the Affleck clan: Ben’s the leading man, Casey’s the character actor. Ben has the perfect chin and lustrous hair, not to mention the major height advantage. (He’s almost half a foot taller than Casey, according to IMDb.) Even when Casey Affleck takes a central role in a film, it’s almost always in material that explores the unlikelihood of a guy like him becoming a hero (think The Assassination of Jesse James By the Coward Robert Ford or Gone Baby Gone). But that’s not the case with the new historical adventure The Finest Hours. There’s nothing quirky or unconventional about Affleck’s charisma here. Even with a more traditional leading man co-anchoring the story and serving as its de facto protagonist, Affleck commands the screen with quiet, steely resolve and intense eyes. At 40 years old, he’s blossomed into a full-fledged movie star.