Grace Kelly beating Judy Garland for Best actress. Was a huge huge shock in the day and something still discussed about to this day. If you have seen Judy in A Star Is Born, you will see why she deserved it.
I agree about Kate Winslet. Her performance in The Reader was crap and perhaps the only performance of her career I have never liked. She should of won for Titanic, but was beaten by the forgettable performance of Helen Hunt.