I haven't seen the viewer numbers for Moonlight (or any show) yet, but Zap2it reports that in the overnights it did a 5.0/9 (household rating/share). That's fairly in-line with its season averages, though down a little bit from the last 2 new airings in January if the overnight numbers hold.
While again, we don't have viewer data the HH rating trends indicate that the normal loss of Ghost Whisperer viewers and the gainback by Numb3rs is a trend that's still in place. Ghost Whisperer did a 6.1/11.
While I was typing this the numbers became available: Viewers: 7.99 million; A18-49: 2.1/ 6
I should have the overnight post up, with commentary shortly. Sorry for the delay!