There have been a few apocalyptic TV shows recently, but I think there are still some new types to be made. We've got the zombie apocalypse (The Walking Dead), an alien invasion apocalypse (Falling Skies) and an electric apocalypse (Revolution). Apparently there was one called "Survivors" about a plague apocalypse, though I haven't seen that one. It's possible that Terra Nova counted as an environmental apocalypse, but since it was all set on prehistoric Earth, that might be pushing the definition. Some we haven't seen yet are economic collapse, nuclear war and, discounting Terra Nova, environmental. I'm sure there are others.
But then, apocalyptic stories are rarely about the setting. They're more about the people and how they survive in their specific circumstances. An apocalypse is interesting, but the people in those circumstances are fascinating.
Mokalus of Borg
PS - And, of course, it makes us wonder how well we would survive.
PPS - Usually the answer is "Not well. Not well at all."