I guess I'm a bit behind the times. I just watched series two of this. (I tend to watch series out of order because I watch them in the order that I get them from the library.)
It took me about four eps to figure out what the hell was going on. The sexuality of the show was a bit mind-bending at first, at least for a goodie-goodie, midwestern girl. I have to admit being mildly puzzled by the guy on guy action that I saw in the first eps. I think it was the fact that there wasn't any lead-up to it and you just generally wouldn't see the hero doing that on American tv.
By and large I liked the series, at least, after I figured out why they were running aound and shooting at things. It's seriously stupid, which is fine. Sometimes all I want is mind candy.
Naturally, they killed off my favorite characters. I was very sad when they killed Owen, but being SF, he walked around for while afterward. I have a knack for picking doomed characters.