I'm not American, so I don't care much for FPS. Once upon a time I was playing the greatest FPS multiplayer game that was and forever will be Counter Strike.
I've played Killzone 2, the singleplayer was pretty average, nothing new or innovative. But I like the feeling of the game, that heavyness of your movement, weapons. It's a definitive war simulator when it comes to atmosfere. Also I really enjoyed it's multiplayer, I'm still playing it.
Uncharted 2 is my GOTY, perfection introduced to gaming.
I will play through Modern Warfare 2 on my PC, FPS on console just doesn't feel right to for me. Maybe that's the reason why I like Killzone 2, because it's slower and more tactical than you usual Halo 3 acrobatic speediness.
MY HYPE LIST: 1) Gran Turismo 5; 2) Civilization V; 3) Starcraft II; 4) The Last Guardian; 5) Metal Gear Solid: Rising
