<Li> T.J. Thyne as David Foil </Li> <Li> Valente Rodriguez as Donald </Li> <P> The film was shot during eleven weeks with five weeks taking place in Ventura, California . </P> <P> Erin Brockovich performed well with test audiences but executives at Universal Studios were worried that audiences would be turned off by the title character's use of profane language . </P>

Where was erin brockovich the movie filmed at
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