'World War Z' and 4 Other Troubled Film Productions

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Brad Pitt's zombie apocalypse drama 'World War Z' hits theaters Friday, and judging from good reviews and initial predictions, it's likely to be one of summer's big box office hits. The film's success wasn't always guaranteed, though — for years, 'World War Z' suffered through production issues that threatened to keep the film from appearing in theaters at all. For more on the movie's troubled history, as well as the production problems of four others, read on. [Image: Paramount]

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