Madam C.J. Walker is one of the most quintessentially American figures who ever lived. In a historical time fraught with post-slavery racial biases, sexism, and social regression, Walker built a business dedicated to the underserved market of African-American hair care, and became the first female self-made millionaire in the process. Now, Octavia Spencer is telling her story in a four-part Netflix original series: Self Made: Inspired by the Life of Madam C.J. Walker. And we've got the first look for the series. Spencer, who also produced the series (alongside LeBron James!), stars as …