It probably means little now to Howard Dean, but CNN's top executive believes his network overplayed the infamous clip of Dean's scream" after the Iowa caucuses. "It was a big story, but the challenge in a 24-hour news network is that you try to keep all of your different viewers throughout the day informed without overdoing it," said Princell Hair, CNN's general manager. The media explosion turned the former Democratic presidential front-runner into a punch line and arguably hastened his campaign's free fall. It's also an instructive look at how television news and entertainment works today. "It was totally unfair," said Joe Trippi, who lost his job as Dean's campaign manager in the fallout. Trippi accepts that the footage was newsworthy, but he figured it was a one-day story. Instead, CNN cable and broadcast news networks aired Dean's Iowa exclamation 633 times - and that doesn't include local news or talk shows - in the four days after it was made. "It shouldn't be an anvil that you keep hammering to destroy his candidacy," Trippi said. The cable news networks ran and reran the video. They analyzed it. They ran footage of the late-night comedians joking about it. They played the instant Internet songs that sampled Dean's shout. Virtually overnight, the "I Have a Scream" speech became legend. It took on such a life, said Paul Slavin, senior vice president of ABC News, that "the amount of attention it was receiving necessitated more attention." Neither Slavin nor Mark Lukasiewicz, NBC News executive producer in charge of political coverage, believe the coverage was overdone. Roger Ailes, Fox News chairman, told ABC News it was "overplayed a bit."