Dragon Age, wasn't what I was expecting at all.
Metro 2033, pretty, but dull.
Borderlands, actually enjoyed this, but its one of those games I bought right before something else I wanted to play came out, so i've just not got round to going back to it yet. It's a rainy day game
Red Alert 3, as above, bought it in a Steam Sale, enjoyed it, but have never gotten around to playing any more of it.
Ghostbusters: The Video Game, got it in a steam sale, wasn't very impressed, so it languishes in the pit of unplayed stuff I got in a sale.
Grand Theft Auto IV, dunno, just never grabbed me and it got shoved to the side for better games.