Okay, I like the general idea of the show. Any minute one of the many fragments of a shattered moon could come plummeting down and wipe out existence as we know it. Now tell me that isn't awesome. The nit-picking comes down to the details. The characters are too broad and don't function in a humanistic manner. I understand that world is about to end, so people may be acting a little weird, but in order for it to work, they still have to act in some realistic way.
The acting is kind of flat as well. The most interesting aspect of the show is the relationship between the teenager and the woman next door.
I have a season pass to the show through my TiVo, and I'll probably watch it for it's entire run (that's if it even makes it to a second season), but I'll tell you one thing, I'm not expecting much.