If Left 4 Dead, The Walking Dead, and countless zombies just don't quench your thirst for the inevitable zombie apocalypse, maybe you should take a note from these guys.
Rooster Teeth, famous for producing the Red vs Blue Halo videos have taken the time to convert their studio exit door into a Left 4 Dead safe room door.
Click the image below to see a large version and visit the source for more photos detailing their door design. I really want to start converting all of the doors in my home to this look: