Ziggler is a good seller, but damn he made that RKO look horrible, face didn't even hit the mat, wouldn't be surprised if Orton gave him a few words after the match.
He didn't time his bump well with that at all, and tried to compensate by overselling. Ziggler is a very good worker, and a good seller too, but for me sometimes he oversells a bit much. It works well at times (ie he takes the Brogue kick wonderfully and makes it look powerful a heck), but they way he flops around constantly can get a bit silly. There should be some consistency with regard to how to sell certain things. It's similar with how Rock would sell Stunners. It was just too over the top and made thing thing look hokey.
As for the Big Show thing. Different times. I knew as soon as AW made the Kobe joke that he was going to get in trouble. I didn't think he'd be fired, but thems the breaks.