GREAT show, especially so far. Neat concept and story. It's sort of like Amazon's Upload series, but I actually liked this better (or just as much, at least). The plot and feel of the series is a lot more realistic, in my opinion.
At first I stopped watching this for some reason, but I decided to rewatch it a 2nd time, and I must say, this is definitely one of the best shows on HBO. I actually feel bad for dismissing it the first time. I think I stopped watching because it didn't have many well known actors in it, but I forget (I also didn't realize Ray Romano was in it until I rewatched it).
The guy who plays Byron Gogle does a an almost flawless job. I can't see anyone else playing his part better. He's believable and convincing 100% of the time. More importantly, however, is that he brings the character to life and is interesting and entertaining to be watched. The rest of the cast is great too though, especially Ray Romano (I thought he was a great casting pick), and even the guy who got his fingers axed off.
As of this writing, all episodes of S2 haven't been released, but what has been released so far is good. It's getting harder and harder to make a good show, it seems, but I think this is a good one.