Christopher Guest's posse!
Best editing: Surprise win! And a good choice, too.
Of the three I've seen, The Help had the most range, from comedy to tragedy, and she excelled at both.Though I'll agree Jessica Chastain would probably have been a worthy winner as well -- she was excellent in everything I saw her in recently (The Tree of Life, The Debt, Take Shelter... I wonder if perhaps she was nominated for the wrong film).
Best editing: Surprise win! And a good choice, too.