Watched the pilot of this last night and it looks good.
For those unaware because of the channels it's showing on (Sky Atlantic in the UK, Pivot in the US), I suggest checking it out. I'll not spoil anything in the OP. All the ready-made-stars in the title of this thread are superb, and the remaining cast hold their own considerably well alongside them. It starts off a bit scrambled as you try to get your head around all the different things going on and all the characters, but about half way through things pick up considerably and now I'm impatiently waiting for a week to pass so I can watch episode two.