|Season 4, great episodes, just it has what is easily the least interesting main arc of the entire series. At first it was interesting but it seemed to get stale in the second half og the season. Just look at Primeval, good episode, but it wasn't good enough to be the season finale. Plus, Adam was easily the worst big bad.|
Worst in which way? Uninteresting? Because in terms of strength he is arguably the best. He threw Buffy around like she was a piece of meat. They had to use magic to turn her into superbuffy just to defeat him. That usually wasn't the case. Buffy defeated Glory, a god, in hand to hand without magic.