According to some gay rights groups the Big Daddy came across as being anti-gay in this commercial he filmed for ESPN. As a result ESPN chose to pull the ad before he made its way into regular circulation.
The funny part about all of this is, anyone who has checked up on Shaq's track record he is anything but anit-gay. He was one of the first players to come out a few years ago and stated he would have no problem with a gay teammate.
To add to that, when Shaq was a member of the Miami Heat he once put on his sheriffs hat and chased down and arrested a group outside of a club who were taking part in a gay bashing beat down. So in reality Shaq is anything but anti gay. Nonetheless ESPN chose to err on the side of caution with this one.