Me neither. Never seen any of them.
The only series I follow is THE CLOSER, and, well...I kind of have to do that.
"Jericho" is the one I watched. Jericho is a town in Kansas and the setting of this tale about nuclear explosions taking out some major U.S. cities...all at the hands of an internal terrorist group bent on overthrowing the government and establishing a new one, from what I can gather from information revealed thus far (and, as it turns out, all we'll ever get).
Ultimately, though, it's a tale of survival. Jericho is an a agricultural town...and its neighbors are desperate for food and trade. Jericho can barely feed itself and cannot trade as much food as the neighbors want. So...the neighbors launch a war against them.
It's a creepy, but very plausible look at how our society may break down in the wake of national disaster on huge scale.
It should have done better, but CBS put the show on a lengthy hiatus, along the lines of what ABC did with "Lost", and "Jericho" lost its audience base (more for some soap-operaish storylines before the hiatus, IMO.). I didn't watch again until I was channel-surfing a few weeks back and landed on CBS....and found myself riveted by the new conflict (new in light of what had been going on just before it went on hiatus). The show actually got better and better, but the audience didn't care.