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Filmmaker Kevin Smith tweeted this photo from a plane after being told he was "too fat to fly." - 

Filmmaker Kevin Smith, director of Clerks and other films, is vowing never to fly Southwest Airlines again after flight crew asked him to leave a plane on Saturday because he was too fat.

Southwest has apologized twice, but Smith has not relented. He's complained loudly to his 1.6 million followers on Twitter, as well as on his Web site and podcast.

Guest: Caroline McCarthy, CNET