Sounds like they had their preview monitor hooked up wrong, but why only for Cheney's speech?
I can see someone in the control room having a goof with it when he realized that the X ended up right over Cheney's face, and he didn't realize that it was going to go live.
I hope that person is serving coffee to the chyron ops after this.
Me too, but I doubt it. The mass media has too much of a history of fiddling with images of the Bush administration. There's no way now that CNN can prove reasonable doubt that this was done on purpose.
It wouldn't be surprising if whomever did it was quietly fired though.