The film took the Best Film and the coveted best director and the Firth gong for his portrayal of stuttering with King George VI, the coach for help in time of war Australian ballot rally Britain.
He also won the Best Original Screenplay, giving the film four Oscars in common - the same as Hi-tech thriller "original" and one more than this, the film "Social Networking", which was tipped as a winner best film possible.
Screenwriter David Seidler used his speech to the joke to thank the Queen Elizabeth II, in particular, as stutterers everywhere.
"I want to thank Her Majesty the Queen does not put me in the Tower of London" for placement of swear words in the mouth of George VI. "And I accept it on behalf of all stutterers worldwide .
"We have a voice we heard," said Seidler, who himself suffered from stuttering, echoing the sidelines of the film.
"Social Networking", which was nominated in eight categories, an Oscar, ended up going home with only three, and none among the most important: editing, original score and adapted screenplay for writer Aaron Sorkin .
Sorkin later gave Facebook founder Mark Zuckerberg, whose image in the film is not too flattering. "I think it was a very good sport about it.
"I do not know if each of us wants the film, based on when we were 19," he said.
"Initial" Cast: Leonardo DiCaprio as a mercenary who goes through the dreams of people around, won four Oscars: film, visual effects, sound editing and sound mixing.
Natalie Portman won best actress for her role in the ballet disquieting thriller "Black Swan".
boxing movie "The Fighter" took two gongs - Best Supporting Actor for Christian Bale, and best supporting actress Melissa Leo, who were both favorites to win.
"King's Speech", directed by Tom Hooper told an incredible story about how he came to do a film with his Australian mother, who was in the room.
"My mother in 2007 was invited by friends in Australia - he is Australian - London fringe in reading unproduced play, an unexpected piece titled " King's Speech, "said 38-year-old Briton.
He explained: "She was never asked to play a reading of his life before she almost did not go because it did not sound exactly promising, but thank you God, it ..
"She called me and said afterwards, Tom, I think I found your next movie. So, tonight, I will honor and moral of the story, listen to your mother. "
In other awards, "Toy Story 3," the third installment of the franchise family, featuring Woody, Buzz Light year and cooperation. Best Animated Film Oscar as expected.
And the award for best foreign film went to "a better world" by director Susanne Bier's Danish star, who defeated the films from Algeria, Canada, Greece and Mexico.
"Oscar" is the culmination of the film award season industry several billion dollars and was preceded by months or a crazy campaign for the coveted golden statuettes.
Firth, who had seen Shu-in for best actor, was one of the usual speech of acceptance of self-mockery, with the opening: "I feel that my career has peaked.
"I'm afraid I must warn you that I feel the excitement, somewhere in the upper abdominal muscles, threatening to join the dance, he said.
These impulses, "as happy as they can be for me ... it would be extremely problematic if they do it at my feet before going behind the scenes," he added, laughing.
He won a Jeff Bridges - who beat Firth for the Oscar for best actor last year - in "True Grit", Jesse Eisenberg in "Social Networking", James Franco in "127 hours" and the heart beat Spanish Javier Bardem in 'Biutiful'.
Portman rivals for Best Actress Annette Bening is a veteran of "Kids Are All Right", Australian Nicole Kidman for "Rabbit Hole", Jennifer Lawrence in "Bones winter" and Michelle Williams in "Blue Valentine".
