25 February 2013
Last updated at 02:41 ET
Actor, producer and director Ben Affleck accepts the night's main prize for his Iranian-set rescue thriller, Argo. It's the first film to win best picture without a concurrent nomination for best director since 1989's Driving Miss Daisy.
Actress Jennifer Lawrence tripped up the stairs as she went to accept the leading actress for her role in Silver Linings Playbook. As she received a standing ovation, the 22-year-old joked: "You guys are just standing up because I fell and you feel bad". Her first Oscar comes for playing Tiffany Maxwell, a women who struggles with mental health problems after her husband dies.
Daniel Day-Lewis was presented his Oscar by Meryl Streep. He made Academy Award history by becoming the only actor to have won the leading actor prize three times. His latest victory came for his portrayal of Abraham Lincoln in Steven Spielberg's historical drama.
Adele thanked her "man," and added "I love you", to boyfriend Simon Konecki when she accepted her Oscar for original song for Skyfall.
Anne Hathaway celebrated with Amy Adams, despite beating her in the supporting actress category. The 30-year-old won for her role as Fantine in Les Miserables. "It's come true," she said as she accepted the trophy.
The recipients of the main acting prizes posed together backstage in height order. L-R: Daniel Day-Lewis, Jennifer Lawrence, Anne Hathaway, Christoph Waltz. Lawrence, 22, is the second-youngest woman to win best actress, behind Marlee Matlin, who was 21 when she won for Children of a Lesser God.
Ang Lee picked up his second Oscar, as he was named best director for magical shipwreck fable Life Of Pi. He last won in 2005 for Brokeback Mountain. A total of 19 directors have won the honour multiple times.
Host Seth Macfarlane was also nominated in the original song category, for Everybody Needs A Best Friend from his hit comedy Ted, but he lost to Adele, who took the prize for Bond theme Skyfall.
Adele performed her Oscar nominated single Skyfall with a choir and orchestra shortly before she won her award, and fought back tears on stage.
Actor Christoph Waltz thanked the rest of the Django Unchained cast during his acceptance speech for supporting actor. He also offered thanks to his character and ``to his creator and the creator of his awe-inspiring world, Quentin Tarantino.''
Actress Catherine Zeta Jones revived her role as Velma Kelly as she performed All That Jazz from Chicago, the main winner at the Oscars in 2003.
The cast of Les Miserables performed Suddenly from the film as part of a medley of songs from the movies.
Barbra Streisand paid tribute to composer Marvin Hamlisch with a performance of The Way We Were - which he wrote for her to sing in the 1973 film of the same name.
Director Quentin Tarantino took home the original screenplay award for Django Unchained. He told the audience "I have to cast the right people to make those characters come alive, and boy did I do it. Thank you so much guys."
Host Seth Macfarlane performed a song and dance number with Channing Tatum and Charlize Theron, and closed the night duetting with actress Kristin Chenoweth in a song dedicated to all the nominees who failed to win an Oscar.
Jack Nicholson presented the best picture prize to Ben Affleck with the help of the first lady, Michelle Obama, who announced the winner live from the White House. Affleck said to his wife Jennifer Garner: "I want to thank you for working on our marriage for 10 Christmases. It is work, but it's the best kind of work." Ang Lee thanked the "movie god" and a "wonderful cast" in his acceptance speech.
A stage hand had to help Adele off stage after she finished her performance because she had kicked off her sparkly Louboutin platforms. She said "I'd pick them up but I can't bend over,'' motioning toward her tight beaded dress.