Erika Christensen pushed the boundaries when it came to choosing her roles, with most of these boundaries bordering on the deep, dark, and depressing. Christensen became one of Hollywood's most talked about stars after her riveting performance as Michael Douglas' drug-addicted daughter in the award-winning film, "Traffic" (2000). Critics were in awe with Christensen's gritty portrayal of a teenage cocaine fiend, an intense role that pushed the limits of the then 18-year-old actress who had to also perform graphic sex scenes in the film. From then on, Christensen became widely associated with playing deeply disturbed characters, including an obsessive teen in "Swimfan" (2002), a student who stopped at nothing to get high grades in "The Perfect Score" (2004), or a young woman dating a perverted older man in "The Upside of Anger" (2005). Her film career careened in the mid-2000s, but it gained momentum with a lead role on the ensemble television dramedy, "Parenthood" (NBC, 2010 - ) about four siblings dealing with the ups-and-downs of raising their own families. She ventured into new territory on the series, playing a high-strung working mom trying to raise a six-year-old daughter with her stay-at-home husband. Christensen's ability to transform herself from a Hollywood "It" girl to a serious actress with an edge - along the way, expanding her repertoire - cemented her stardom and provided the opportunity for a thriving, longtime career.