17. Melissa Leo, Best Supporting Actress, The Fighter (2010)
Watch The Speech
Though many winners feign surprise when they nab a statue, Melissa Leo seemed to have fallen into a state of shock. She first gave a deer-in-headlights stare up into the rafters, she then dropped an f-bomb, and proceeded to shout out someone who wasn't actually there.
When she did finally seem to regain her wits, things got even worse, as she walked offstage with Kirk Douglas's cane in what seemed to be a mocking gesture about his old age. Melissa, you know that man suffered a stroke right?