How do I view the entire credits of a movie (including extras)?

Someone I know told me (a while ago, like back in 2009 or 2010) that they were an extra in the movie "Flipped" but they also had a speaking part or some other short part like that, I guess. I don't know if it's true that he was in it so is there a way to see a list of extras that played in it?
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