Been working my way through Resistance: Fall of Man. In short I'm enjoying it, though it would look vastly better if they were willing to use some colors every now and then. Not my favorite Insomniac title, and I've had to turn down the difficulty, but still generally enjoying it.
Resistance has a system of "skill points", like the Ratchet & Clank games, where you can unlock little bonuses like concept art. You get these by meeting cryptically named requirements like "Passive Aggressive" (which turns out to be killing X enemies with non-weapon damage), which earns points to spend. This is kind of neat, but I'd enjoy the system so much more if I knew what those goals were so I could try for them. As it is now the system is so random as to be valueless to me.
Also it just really rubs salt in the wound of there being no Achievement equivalent on my PS3...