From recent years; Hydrophobia (360 version 1.5) - it's a really, really good game for 400 points. I thought the PS3 version was much worse, especially replacing the fat Scottish "Scoot" character with a cookie-cutter American muscled douchebag. I would love a "hardcore" mode, something akin to version 1 (that I didn't get a chance to play) where the hud did not display and highlight where to go, making exploration key. I thought the environments were also well designed and convincing.
Duke Nukem Forever - fucking hell it was FUN. Long (for modern FPS) too. Critics were always going to hate on it, pretentious cockends. The original was hardly revolutionary nor tasteful, and I was always a Quake fan but appreciated the humour and fun in Duke, the essence of which was carried over to it's new incarnation. Of course DNF wasn't perfect and I have complaints of my own, but it was certainly worth playing and undeserving of widespread scorn. If I'm brutally honest, I think it's better than Gearbox's other effort, Borderlands.