I can’t get enough of “The Rockford Files,” even the episodes I’ve seen over and over. I watched one Sunday night, and mourned the man who embodied the title character. A writer can go to school on the twisty, witty scripts. But the show wouldn’t work without James Garner as Jim Rockford, the put upon private investigator who could say everything with a casual glance. He made it look so easy, but of course, it wasn’t.