Cynthia Littleton Business Editor In the late 1980s, when future “SportsCenter” legend Linda Cohn wanted to move up the ladder in her career from Long Island cable news, she made a big batch of chocolate chip cookies one day for her camera operator. It was a bribe to persuade him to stay late to help her film a spec sports report that she sent out to TV stations in pursuit of her dream job as a sports anchor. Fortunately for Cohn, KIRO-TV, the CBS affiliate in Seattle, gave her a shot.