Carey Mulligan - Promising Young Woman: Portrait of a woman who would be committing suicide if she wasn't already dead.
Frances McDormand in Fargo. I really don't have to say anything else, do I?
Emma Stone - Easy A: She's given better performances I grant you but this is the one I knew she would be a superstar.
Julianne Moore - Magnolia: All of her work is magnificent but her emotional breakdown is the heart of that masterpiece
Eliot Page - Hard Candy - that was one of the bravest performance in the history of film.
Reese Witherspoon: Election - when she went from being an ingenue and an innocent to one of the greatest actresses in history.
I could go on and on but i'm going to wrap this up with one last one:
Kate Winslet: Little Children - that's the one she should have gotten the Oscar for, not the Reader