Winners: Mo'Nique won Best Supporting Actress while, right, Christoph Waltz, pictured with wife Judith Holste, won the gong for Best Supporting ActorMo'Nique, who played the role of an abusive parent in the flick, thanked the Academy as she collected her first Oscar for making it 'about the performance and not the politics'.
The actress was wearing same shade of blue as Gone with the Wind actress Hattie McDaniel's when she took her Oscar seven decades ago.
Austrian actor Christoph Waltz cemented his place in Hollywood by winning the best supporting actor Oscar for Inglourious Basterds.His role as a sociable fiend of a Nazi helped him beat four Hollywood veterans: Matt Damon for Invictus, Woody Harrelson for The Messenger, Christopher Plummer for The Last Station and Stanley Tucci for The Lovely Bones.
Quentin Tarantino cast the veteran stage and television actor as the prattling, ruthless Jew-hunter Hans Landa in his World War II saga.
Waltz gushed: 'This is your welcoming embrace and there's no way I can ever thank you enough, but I can start right now. Thank you.'
The animated film Up was awarded the Oscar for Best Animated Feature Film.
Film-maker Pete Docter described it as an 'oddball film'.
He added: 'It was an incredible adventure making this movie but the heart of it came from home.'
Amanda Seyfried and Miley Cyrus presented the best original song Oscar to The Weary Kind from Crazy Heart.
Tina Fey and Robert Downey Jr presented the best original screenplay to Mark Boal for The Hurt Locker.He said: 'You honour and humble me with this, more than you know.'
Boal dedicated the gong to troops in Iraq and Afghanistan as well as the wounded and those who had not made it home.
He also dedicated the award to his father, who he said had died a month ago.
The award was jointly presented by Robert Downey Jr, who appeared a shade blue - donning a large powder blue bow tie and round tinted glasses.
Carey Mulligan, herself nominated for an education joined Avatar star Zoe Saldana on stage to present the Oscar for best short films.
These went to Logorama for animated film, Music By Prudence for documentary short film and The New Tenants took best short film.
Best Make-Up went to Star Trek while Avatar won the award for art direction.
Costume designer Sandy Powell won the Oscar for best costume design in the film The Young Victoria.
South London-born Powell, who has won two Oscars before, said: 'Well, I already have two of these.'
Sandy said she wanted to dedicate it to designers of costumes for contemporary films, not dead monarchs and musicals.
'This is for you but I'm taking it home,' she said.
Avatar took best visual effects making it the third of the night for James Cameron's 3D film.
The Hurt Locker scooped the Oscars for sound editing and sound mixing, making it the third of the evening for the Iraq war drama film.
Jennifer Lopez wore a gorgeous Armani frock on stage with Avatar's Sam Worthington to present best original score, which went to Up.
Best documentary feature went to The Cove.
Quentin Tarantino and Pedro Almodovar presented best foreign language film to. El Secreto de Sus Ojos (The Secret In Their Eyes) from Argentina beating favourites A Prophet and The White Ribbon
source: dailymail