This is one of the Best Science Fiction TV show ever made. I might Even dare saying that it is better then Stargate SG1. The characters are very good, the story-line is deep and coherent. It is very adventurous and the best thing is that you never know what could happen from an episode to the next. it is now available on Amazon Prime and it is nice to watch it in high definition. 6 season, complete story, amazing effect! I wish they could make more of them!