Crash - Just a terrible movie. Definitely the worse movie to ever win Best Picture.
Schindler's List (ducks) - Not entertaining and I understand that the Holocaust was a horrible,horrible thing but I don't want to pay to see a movie that is supposed to entertain me on the subject. I could be moved by simply reading a book or watching the history channel on the subject, i don't need the movie. It is almost like you have to like this movie based on the subject matter.
Goodfellas - Entertaining movie but nothing pisses me off more than when people say it is better than The Godfather and I seem to hear that often from people my age(in their 20's). I even liked Casino more.
The Passion of the Christ - Not highly ranked at all by critics, so some could argue it's not "overrated" but the numbers it put up say otherwise. Terrible snuff movie made by a crazy,racist drunk man. Hard to make a movie about this subject that is not moving at all. One of the few movies that actually makes me angry.
I totally agree with you about Crash. It was such a predictable, contrived, over-hyped attempt of racial commentary that I actually found it humorous at times. It certainly didn't deserve to win Best Picture.