It's very good. Was two seasons made. The only shit thing is that there should be at least 3 seasons but it was scrapped, so there is no satisfactory conclusion. It is a bit wierd, and you will spend some of the time wondering what is going on but it is a very good watch.
*EDIT* That is presuming it's Carnivale you mean
Play.com (UK) : Carnivale: Season 1 (6 Discs) (HBO) : DVD - Free Delivery