Just finished watching the first season. I'd say it's an average sci-fi show, reminiscent of Dark Angel at times. Or, at least, it would have been average, had it not been for the lead actress who is quite impressive in a multitude of different roles and makes the show a lot more interesting than it would have been otherwise.
Actors playing multiple parts and interacting with themselves on screen is nothing new either, but they are definitely pushing the limits on that concept in this show. She is virtually in every scene, often multiple times. It doesn't hurt that she is ridiculously attractive in all those parts.