Academy Awards: Best Actor and Actress in the leading roles....

In 2006, Forest Whitaker won the Oscar for the Best Actor in a Leading Role for the role of "Idi Amin" in the movie "The Last King of Scotland". And, Helen Mirren won the Oscar for the Best Actress in a Leading Role for the role of "The Queen" in the movie "Queen Elizabeth II".
In photo: Forest Whitaker (L) and Helen Mirren

In 2007, Daniel Day-Lewis won the Oscar for the Best Actor in a Leading Role for the role of "Daniel Plainview" in the movie "There Will Be Blood". And, Marion Cotillard won the Oscar for the Best Actress in a Leading Role for the role of "?dith Piaf" in the movie "La Vie en Rose".
In photo: Daniel Day-Lewis (L) and Marion Cotillard

In 2008, Sean Penn won the Oscar for the Best Actor in a Leading Role for the role of "Milk" in the movie "Milk Harvey". And, Kate Winslet won the Oscar for the Best Actress in a Leading Role for the role of "Hanna Schmitz" in the movie "The Reader".
In photo: Sean Penn (L) and Kate Winslet

In 2009, Jeff Bridges won the Oscar for the Best Actor in a Leading Role for the role of "Otis 'Bad' Blake" in the movie "Crazy Heart". And, Sandra Bullock won the Oscar for the Best Actress in a Leading Role for the role of "Leigh Anne Tuohy" in the movie "The Blind Side".
In photo: Jeff Bridges (L) and Sandra Bullock

In 2010, Colin Firth won the Oscar for the Best Actor in a Leading Role for the role of "King George VI" in the movie "The King's Speech". And, Sandra Bullock won the Oscar for the Best Actress in a Leading Role for the role of "Nina Sayers" in the movie "Black Swan".
In photo: Colin Firth (L) and Natalie Portman

In 2011, Jean Dujardin won the Oscar for the Best Actor in a Leading Role for the role of "George Valentin" in the movie "The Artist". And, Meryl Streep won the Oscar for the Best Actress in a Leading Role for the role of "Margaret Thatcher" in the movie "The Iron Lady".
In photo: Jean Dujardin (L) and Meryl Streep

In 2012, Daniel Day-Lewis won the Oscar for the Best Actor in a Leading Role for the role of "Abraham Lincoln" in the movie "Lincoln". And, Jennifer Lawrence won the Oscar for the Best Actress in a Leading Role for the role of "Tiffany Maxwell" in the movie "Silver Linings Playbook".
In photo: Daniel Day-Lewis (L) and Jennifer Lawrence

In 2013, Matthew McConaughey won the Oscar for the Best Actor in a Leading Role for the role of "Ron Woodroof" in the movie "Dallas Buyers Club". And, Cate Blanchett won the Oscar for the Best Actress in a Leading Role for the role of "Jeanette 'Jasmine' Francis" in the movie "Blue Jasmine".
In photo: Matthew McConaughey (L) and Cate Blanchett

In 2014, Eddie Redmayne won the Oscar for the Best Actor in a Leading Role for the role of "Stephen Hawking" in the movie "The Theory of Everything". And, Julianne Moore won the Oscar for the Best Actress in a Leading Role for the role of "Alice Daly-Howland" in the movie "Still Alice".
In photo: Eddie Redmayne (L) and Julianne Moore

In 2015, Leonardo DiCaprio won the Oscar for the Best Actor in a Leading Role for the role of "Hugh Glass" in the movie "The Revenant". And, Brie Larson won the Oscar for the Best Actress in a Leading Role for the role of "Joy Newsome" in the movie "Room".
In photo: Leonardo DiCaprio (L) and Brie Larson