@ Ebdin9th - See, I didn't buy that, either. Sure, it's gruesome, but it's not believable.
And it's right around then that people go "Oh, and zombies are?", but that's the point: in that world, they are. What isn't is all the gnashing through bone, tendons, muscle and what-not. It's like Lepplady said, those bits are all about being gruesome, and it's a pretty cheap trick because it's a simple gross-out. I know the 18-24 mob might be there going "Whoa, man, did you see that sh!t?" over Twitter or FB or whatever, but...
@ Lepplady - That's the thing. Joe didn't react at all, and realistically, he would have, most likely by pushing Rick away and laying into him. Rick's best bet by far was to stick the nut on and take control, rather than risk having the badass manoeuvre backfire on him (which it should have, because humans lack the bite strength to do what he did). So, as above, I agree it was all about gruesomeness. It just didn't ring true (and we saw how much of a badass he could be very shortly afterwards - entirely understandably. Putting the bite on Joe and doing that risked turning him into an animal, alienating him to a degree from the audience. Going medieval on Carl's would-be molester alone, while extreme, would have most of us going 'Yep, good lad, sort the SoaB').
BUT...it's all moot really, isn't it? Done bun can't be undone, and all that. And as I said, I'll still be there at the start of next season and hoping for the boxsets at Christmas. Quite how they're going to get out the boxcar situation, I don't know. Someone's bound to cop for it early on. I just hope they don't have Rick doing his best Jaws (James Bond, not the shark) impression again.