Is it just me or am I seeing zombies breaking into mainstream advertising? I know this is an old ad but …

Or this …

Or this … zombies pushing pharmaceuticals?

When precisely did zombies become a vehicle by which you can sell everything from Corollas to Corn Pops? More importantly, are they effective advertising? I need to research this … don’t get me wrong, I freaking love any and all things zombie, but let’s remember that the living dead are flesh eating monsters after all…