I tried to get up sufficient motivation to watch one of these shows. I tried watching them. Had them set up on my recorder and everything. But I can't.
I watched a few episodes of Falling Skies but not from the beginning so maybe that was the problem. Anyway, it just didn't have enough to interest me and keep me coming back.
Last Resort just seemed way too ridiculous. The US government would have nuked them on day one.
Revolution was staggeringly annoying for me. I keep wanting the heroine to die a horrible death due to her unfathomable stupidity. Hard to watch a show when you not only have no sympathy for the hero/heroine but instead have open hostility toward them. Seriously, that girl is so ridiculously stupid it defies all logic and reason that she could survive one day in a post apocalyptic world. She is constantly putting herself and her companions into mortal danger...if I was in her group I would have been forced to kill her long ago.
And with that in mind I was pleasantly surprised with this first episode of "Sherlock." It was well written, well acted and well produced. It didn't (with a few minor but forgivable exceptions) insult my intelligence. Now, I know that the very concept of Sherlock Holmes' deductive reasoning ability is, on its face, ridiculous. But so is the concept of Batman. That's where the suspension of disbelief comes in. I am willing to suspend my disbelief because, after you accept the crazy premise, the universe that these stories take place in more or less makes sense.
If Batman beat the crap out of a villain and then turned his back on them so that they could kill him or escape that would stop me right in my tracks and I wouldn't pay any further attention to it.
So...for me, Revolution and Last Resort are kind of like that. They set up these premises and then act in ways that defy logic. It is, for me, irritating.
There is another big budget American series about to start up. It's called "Zero Hour" and I will watch it for a few episodes to see where it goes. But I'm not hopeful.