Korean actress Kim Hye-ja took the best actress honors for "Mother (2010, Bong Joon-ho)" from the Los Angeles Film Critics Associaton. She is acclaimed for her portrayal of a mother looking for her son's killer in the film.
Related article: http://www.hollywoodreporter.com/news/la-film-critics-assn-names-59064
A complete list of winners follows.
PICTURE: The Social Network
Runner-up: Carlos
DIRECTOR: Olivier Assayas, Carlos, and David Fincher, The Social Network (tie)
ACTOR: Colin Firth, The King’s Speech
Runner-up: Edgar Ramirez, Carlos
ACTRESS: Kim Hye-ja, Mother
Runner-up: Jennifer Lawrence, Winter’s Bone
MUSIC/SCORE: Alexandre Desplat, The Ghost Writer, and Trent Reznor and Atticus Ross, The Social Network (tie)
PRODUCTION DESIGN: Guy Hendrix Dyas, Inception
Runner-up: Eve Stewart, The King’s Speech
CINEMATOGRAPHY: Matthew Libatique, Black Swan
Runner-up: Roger Deakins, True Grit
SUPPORTING ACTRESS: Jacki Weaver, Animal Kingdom
Runner-up: Olivia Williams, The Ghost Writer
SUPPORTING ACTOR: Niels Arestrup, A Prophet
Runner-up: Geoffrey Rush, The King’s Speech
FOREIGN LANGUAGE FILM: Carlos
Runner-up: Mother
ANIMATION: Toy Story 3
Runner-up: The Illusionist
SCREENPLAY: Aaron Sorkin, The Social Network
Runner-up: David Seidler, The King’s Speech
DOCUMENTARY/NONFICTION FILM: Last Train Home
Runner-up: Exit Through the Gift Shop
NEW GENERATION: Lena Dunham, Tiny Furniture
DOUGLAS E. EDWARDS INDEPENDENT/EXPERIMENTAL FILM/VIDEO: Film Socialism
LEGACY OF CINEMA AWARDS: Serge Bromberg, Henri-Georges Clouzot’s Inferno, and the F.W. Murnau Foundation and Fernando Pena for the restoration of Metropolis
CAREER ACHIEVEMENT: Paul Mazursky