Just saw my first episode. "Did I like it?" you ask. Well-
Of course, I firmly believe that Isaac Asimov should be acknowledged in the credits as the author of Caves of Steel, but since it is impossible to copyright a "mere idea," I'll move on from that. I will say that although Karl Urban is getting the leading man buzz and the fan-girl swoonage, the real star to me seems to be Michael Ealy, who plays the android Dorian.
Aside from that - the story wasn't remarkable, but the show was tightly put together, and there weren't too many glaring gaps of logic and characterization >cough<Defiance>cough<. Also, they have the terrific Lili Taylor as the captain, and I could watch her read the phone book (which is a little more dramatic than what they've given her in this episode).
So - not mind-blowing, but worth following for a while to see where it goes.