The highest rated show in the history of cable TV returns to AMC this Sunday night. Did you know there are secret homages to plenty of people and other shows featured in Walking Dead. Did you know the car Glenn stole in season 1 to lure the walkers from the store was the same Dodge Challenger that Walter White bought his son in Breaking Bad? What was the sign that hung in Dale's RV? What was the building that was supposed to be the CDC at the end of season 1? Find those and more right here.