What are some movies of poor/middle class ppl who became rich?

Question by Michael Johnson: What are some movies of poor/middle class ppl who became rich?
I saw these movies already: The Pursuit of Happiness and Slumdog Millionaire. Please list some really inspiring movies of a poor or middle class person who became rich through hard work. I don't care of the film is fiction, as long as it's good. Also, do you know any famous people who grew up poor but became rich through hard work? Please exclude entertainers or sports stars, because that's boring.

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