The Best Actress category is piping hot with women exploring dark and dangerous themes while trying to find meaning in their own lives. L.A. and Toronto writers have given Best Actress honors to Julianne Moore, who portrays a housewife in Far From Heaven. Her co-star from The Hours, Nicole Kidman, won a Golden Globe and receives her second leading Oscar nomination in two years. Another back-to-back nominee is Renee Zellweger, who joins the fray with her performance in Chicago after earning a nod last year for Bridget Jones's Diary. Meanwhile, Salma Hayek enters the race with her portrayal of Mexican artist Frida. And finally, Diane Lane wins her first ever Oscar nod with her work in Unfaithful.