Hollywood's finest have gathered for the Academy Awards ceremony in Los Angeles, with Ben Affleck's Iran hostage drama Argo hoping to edge out Steven Spielberg's Lincoln for best film of the year.
Ann Hathaway has won the best supporting actress Oscar for her role in the musical Les Miserables.
Christoph Waltz won the best supporting actor Academy Award for his role as a genteel bounty hunter in the film Django Unchained directed by Quentin Tarintino. Sunday's prize is Waltz's second supporting acting Academy Award. He won his first best supporting acting prize for his role as a Nazi in Tarintino's Inglourious Basterds.
Searching for Sugarman, the chronicle of a forgotten musician's rediscovery took home the Oscar for best documentary.
The French-language film Amour has won the best foreign language Academy Award.
The award for best picture is among honors yet to be announced.
This year's show featured a film tribute to the so-called "Bond girls" who have appeared the five decades of the British super-spy James Bond films. Halle Berry, herself a "Bond girl" introduced the tribute. Afterwards, Shirley Bassey sang Goldfinger.
Lincoln was the favorite film with 12 nominations when the Hollywood awards season started two months ago. But Argo has won the best picture honor in almost all the other awards this season.
Ben Affleck was not nominated for best director, leaving Spielberg as the likely winner in that category.
Other films with several nominations are Ang Lee's shipwreck tale Life of Pi with 11, French revolutionary musical Les Miserables and romantic comedy Silver Linings Playbook with eight apiece, and Argo with seven.
Daniel Day Lewis is the front-runner in the best actor category for his role in Lincoln.
The Oscar winners are chosen by some 5,800 movie industry professionals who are members of the Academy of Motion Picture Arts and Sciences.
Seth MacFarlane is the host of this year's show.