Dead Rising
Bam! See what I did there!?
Seriously though, I have two ideas for games to include Zombies.
1. AssCreed Brotherhood would actually do GREAT with a zombie mode, all the citizens turned while Ezio flees around Rome hoping to accomplish tasks and save what Named NPCs he can. Of course, the city would also be in current falling-apart status, and the hoard would find there way onto the roofs.
2. Mirror's Edge. Now, this is more the kind of game that I would want a zombie scenario to occur in. You can barely fight them, they swarm you if you stay still too long - in fact you are one of the few survivors because of your free-runnung ability. If you do fight you don't even have time to know if you killed the zombie or not. Of course, the city would fave to be fuller and more complete (see inFamous or AssCreed). Hopefully, Dead Island will satisfy this idea in some ways, but I can already tell that it won't be perfect.