On Mark Henry's promo, during the 6/25 Smackdown, the word "ass" was used. It was not censored, and it was in a promo, which means WWE reviewed it and accepted it.
The link to the video on wwe.com is below (skip to 2:25):
http://vids.wwe.com/12399/smackdown-mark-henry-attacks-big
This is...