As much as my wife and I love Walking Dead, we love Spartacus even more. If you are over 14, I urge you to check it out. (It's like soft-core porn.) The blood-splattering is over done and, at first, may seem corny. But the plot reels you in to much more profound depths than Walking Dead.
SPOILER- Regarding the question about the brothers, I think they are going be part of Rick's group for awhile. The fans love them both and neither is going away soon. What I'm curious about is how they are going to develop Merle's character. For the longest time he was an !@#. And an antagonist. These traits have diminished. So what is going to fill their place? What side story is he going to occupy? He is important and liked enough to have a side story.
Oh man I agree, I was completely shocked when he finished the bible quote. I was like "Merle... reads the bible...?"