World of Goo,
. Naw, last games I played were:
* Left 4 Dead, it's a nice concept, but it's repetitive and has no difficulty curve whatsoever. I haven't played it online (as it's intended to be played), but somehow I doubt it'd be as entertaining as, say, CSS's zombie mod(s).
* GTA IV, it's GTA etc. I haven't finished it, but it's a very high-quality game, with an enormous amount of content and whatnot. I'm not as lyrical with GTA as most people are though, so I don't think it's as fun a game as people make it out to be. But maybe that's just me,
DMC 4 is available for PC, and it's an awesome arcade-style game - there aren't that much games like that for PC. Although it plays better with a controller, I have to admit.
Sins of a Solar Empire is pretty epic, but you have to have a lot of patience for that.
CoD 5 was pretty good, it got off with a pretty meh beginning, but it grew on me as the game progressed. Still not as awesome as I consider CoD 2 to be though. Also, I should replay CoD 1 one of these days.
Assassin's creed was pretty good, but also repetitive and whatnot. Same with FC 2, same with the new PoP, but that one was far too easy and predictable in terms of gameplay.
There's Bioshock, which is an awesome game, especially graphics, style and atmosphere-wise, but I haven't been able to finish it because of a graphics bug that makes my system crash, :/.
I recently installed Rise of the Argonauts, but that had the same bug - it was also made in the Unreal 3 engine. That game's supposed to be a third-person action game like God of War combined with a lot more story and interaction with people, but it kinda fails at both due to not very smooth fighting and very long (read: dull) conversations in between fights. I'm not sure what to think of it, really. It does have a pretty large, non-default RPG aspect, where them whaddyacall it, accomplishments? Those thingies that get added to your account or something on consoles. Well, those can be used to purchase new skills, four skill trees, each with probably 30+ skills. Nifty.
Other than that, I can't think of anything.