Adrien Brody

The only person under 30 win an Oscar for Best Actor to date is Adrien Brody. The 29-year-old was up against seasoned actors like Michael Caine and Jack Nicholson, but the underdog came out victorious. He was given a standing ovation by the audience, although the most memorable moment about his win was his kiss with Halle Berry (who confirmed it was not planned).