Still watching this a little out of duty now, as I think i just want to see it through to a finale. For me, it's never returned to the heights of the first season. Maybe it was just new and different then, but I preferrred the story lines and characters more. Loved the gladiatorial combat scenes. John Hannah was especially suited to hamming it up as Batiatus, oh, and the original Spartacus was better (poor fella).
It's always been fairly ridiculous, but as its got bigger it just gets even more stupid, I find myself having the urge to fast forward bits just to get the episodes done.