 BBC News | Oscars 2012: Big winners at the 84th Academy Awards BBC News Silent movie The Artist has won best picture, best director for Michel Hazanavicius and best actor for Jean Dujardin at the Oscars. Meryl Streep won best actress for her portrayal of Margaret Thatcher in The Iron Lady - her 17th Oscar nomination. Oscars and Meryl Streep set social media abuzz Streep takes third career Oscar KJo's starstruck moment with Meryl Streep |