Yea, wow.
Although, this did come after the two shook hands and hugged, and blocked Brokaw's script
(I am not sure how to put the youtube video actually in the post, but i'll give the link)
Hug
But yea, I think its apparent the two don't really like each other. But even so, if you are going to run for President, and you only have to debate your opponent 3 times, don't you think for the 4 1/2 total hours of you being on stage with him you could act like you at least respected him?