NBC is definitely not having a great fall season- its series premiered well, but have leveled off into non-spectacular levels. In particular trouble are "LAX" and "Hawaii," and given the cost of "Father Of The Pride," it won't be far behind. And "Joey"s decent is particularly troubling, and it hasn't even leveled off yet.
I would compare thsi graph with last season's, however I deleted them to save disk space.

As for Fox, I would have extended the graph beyond 10 million viewers had Fox any series drawing more than that amount. But it doesn't. Don't expect any of these series to last.