I'm giving
Far Cry 2 a shot.
It's a pretty cool open world shooter, but I spend most of my time driving from place to place and not shooting anything. Also, after playing COD games the controls for FC2 feel pretty stiff.
The scenery is cool and I like that you can start almost everything on fire. I open most of my gunfights with a Molotov and let the fire spread while I run and gun.