Many of the earlier series were also rather earth centric. Watched ep 3 last night and loved it...they seem to have hit all the right buttons so far, a good combination of humour and tension...
If this keeps up, I can't see andy reason why it won't be a huge success.
My fears that it would go all serious like the batman movies and therefore lose the point, are so far unfounded.
roll on episode 4 :)