One of the best Sci Fi shows that I have seen in a long time. Such a comets shame that television companies are so quick to cut off shows and not allow them to finish them off completely. I loved season 4 and still really worth watching g but felt a season 5 could of given it more scope to finish it off as did feel it was rushed too quickly by the end of season 4.
I still can't understand how I did not watch this when it was on air. Finding this on Netflix has been a pleasure to watch, but such a shame that it got cancelled :-(