For me it was L.A. Noire. I love the setting and everything, but I hate Rockstar and see them as wannabes and hasbeens. I got Noire in a trade along with a crapton of other games, and I decided to pop it in. All I can say is wow.
Another is Mass Effect. I got all three games in that same trade, and I had high expectations, but ME1just isn't doing it for me.
What about you guys?