Kevin McGuire’s Scrooge in Capital Repertory Theatre’s production of Charles Dickens’ “A Christmas Carol” had more than a touch of Falstaff in it. His villainy was vivacious, startlingly so—almost playful. Its benefits became clear late in the show when his transformation seemed inevitable. Always energetic, Mr. McGuire roamed the stage and let us know on several occasions that he was an actor, his story larger than life. I found his penitence to be strangely convincing, as if it were the real thing, not the penny-pinching. One gained additional sympathy watching the most moving performance of the evening, that of the boy Scrooge, played by a beautifully crafted puppet (tenderly manipulated by actor Kevin Kelly). Here we saw an implacable wooden face, the abrupt but always moving gestures of the puppet drawing pity from us for the boy Scrooge.