In 1999, King began her acting career and made her debut in the Daniel Waters' comedy Happy Campers, as Pixel. Happy Campers was screened at the Sundance Film Festival in 2001, and in 2003, King was nominated for "Best Actress" at the DVD Exclusive Awards for her portrayal of Pixel. Filmed in 1999, she also appeared in Filter's music video for "Take a Picture". Following her debut acting roles, Read more...

2005 saw King in a variety of film and television roles. She first appeared in the independent black comedy and satire Pretty Persuasion, playing a small role as Kathy Joyce, the step mother of Evan Rachel Wood's character. Afterwards, she gained lead roles in the film adaptation of Frank Miller's graphic novel Sin City. She had met with director Robert Rodriguez, who was a fan of her work, and Read more...

In 2006, King appeared with a small role as Heather in the comedy The Alibi, and a starring role in the thriller True True Lie. Her largest role that year was in the David Arquette horror film The Tripper as Samantha; Arquette had, in addition to directing the film, had produced, written, and acted in it. King had a recurring role on the short lived comedy The Class, which ended its run on television Read more...