if you have a decent enough PC, theres a free demo out there that I got from Gamespot.com. I'm sure its other places by now.
wasnt bad, but its very max payne like. the pc demo is really really short, but what i thought was interesting was the way the AI worked, they really wanted you to use cover. while some enimes were reloading or hiding behind things, i was able to flank them and grab them from behind while they were waiting for me to shoot them again. human shields are fan-tastic!