The 9 Scariest Types of TV Apocolypses
With the premiere of CBS's "Under the Dome," television viewers were treated once again to the specter of civilization's collapse — a topic that has become increasingly popular in recent years. From zombies to frayed electrical wiring, everywhere you look across primetime, something is bringing civilization to its knees. Here, then, are the top causes of civilization's collapse on TV today. — Richard Rushfield, Yahoo! TV
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"The Walking Dead" -- "Killer Within"
T-Dog (Robert 'IronE' Singleton) and walkers in "The Walking Dead" episode, "Killer Within."