The past few years has seen a resurgence of action films revolving around a past-his-prime yet-still-bad-ass dude setting things right. This was probably first set in motion by Sylvester Stallone and his grizzled action star filled "The Expendables" films, and has been handily retrofitted to varying degrees of success for actors like Arnold Schwarzenegger ("The Last Stand," "Sabotage"), Liam Neeson ("Taken," "Unknown," "Run All Night," "Non-Stop") and Kevin Costner ("3 Days to Kill"). One of the more unlikely participants in this prune juice-fueled movement is Sean Penn via the "The Gunman." It shares a lot with those other films —a graying, righteous loner making the hard decisions no one else can or will, an improbably high body count, a soundtrack that bleeps along like the inner workings of a computer, a beautiful woman caught in the middle— but is also saddled by Penn's self-conscious...
