Just finished watching the second season of "Dark Angel"; purchased both seasons on Amazon. I had never seen it when it aired, so it was nice to view it all without commercials & continuously. I really enjoyed both seasons, but I feel that the first season was better; in the second season they went off on some rather bizaare tangents. Unfortunately they lost, for the most part, the character of Lydecker, who was a multi-dimensional character with many as yet unexplored aspects. He was unfortunately replaced with a comic villain, White. There were times when I wondered how the other actors kept a straight face playing opposite him; this seemed somewhat out of place to the tone of the program in general.
While I understand that it is necessary to keep the love interests apart(in true soap opera tradition), I felt that the virus keeping apart Logan & Max was bogus; it seemed too obviously to be a plot device & didn't come from a true place but the worst, in my opinion, was the breeding cult episodes, which recalled every bad cliche about Satan worshippers that you ever saw in any 1970's "Movie of the Week". (Hey, just because they're devil-worshippers doesn't mean they're freaks!) Beyond that this is a great show; very enjoyable & watchable; it's unfortunate that it was cancelled, and I agree with other comments that it would be nice to see how this all came out, maybe in a follow-up movie.