Infamous is a good IP, I dunno why it isn't more popular.
God of War is pretty well loved and the reason a lot of people say Killzone 2 is better than Killzone 3 is because Killzone 2 is a bit more original. Killzone 3 (especially the multiplayer) feels a bit more like CoD, which is a shame. That's what i've picked up from the Killzone forums anyway.