Today got back to GTA4, and had fun killing guys in the Concrete Jungle mission. I am not yet very agile with the controller. I think that it was easier to control with a keyboard (ASDW) and a mouse for look/aim. Hey, but I need to practice, and I might get good at this. Or not :P
Oh, and by the way, I also killed a flying rat (pigeon) with a shotgun. it was da fun. Also, got into a police car, but the computer network was not accessible.