It was interesting to see Ben Affleck emerge as the Hollywood mascot of the Democratic Convention. The week reminded me of Ben's movie Pearl Harbor: wall-to-wall evocative military imagery, a cast of thousands, superb production values, but a huge gaping hole where the star performance was supposed to be. On TV the other night, young Mr Affleck offered a pearl of wisdom to Mr Kerry and his consultants: "You have to enervate the base," the Hollywood heartthrob advised solemnly. If it's enervating the base you're after, John F Kerry would seem to be the perfect candidate. On Thursday, for his...