It looks to me like the writers are trying to push Randall (the zombie) and especially Callie and the other demon folk to be the breakout characters on the show; so far 2 out of the 3 stories were Callie/demon plots. (I'm still not sure whether I like Callie or not; I get that she's a demon and you're not really supposed to like her per se, but I'm not certain how I'm supposed to feel about her as a character. She has yet to display any signs of humanity--or is it demonity?--that would make me want to route for her).
But yeah, the show's not great, but it's OK. I think Ugly Americans' premise is more original than the jokes and stories, but I can sit through it for half an hour and not complain.