Rob Sacchetto of Zombie Portraits has been doing stellar pop culture zombies for close to a decade now. He's drawn a new zombie - every single day - for close to 4 years now as part of his Zombie Daily project.

Everything from cereal mascots:
http://zombieportraits.com/happy-st-patricks-day-of-the-living-dead/

To Looney Toons:
http://zombieportraits.com/looney-toons-zombies/

To celebrities and political figures:
http://zombieportraits.com/zombie-celebrity-head-shot-club-vladimir-putin/