Which Oscar Front-runner Would You Most Like to See Defeated?

If all goes as most pundits anticipate, Natalie Portman (Black Swan), Colin Firth (The King's Speech), Melissa Leo, and Christian Bale (both from The Fighter) will take home home Oscars on February 27. But say one of them had to lose — who should it be? On which front-runner's face would you most like to see shock after the envelope is opened? Let us know!