Is CNN Trying To Tell Us Something?

CNN was airing Vice President Dick Cheney's speech live from the American Enterprise Institute in Washington -- when a large black 'X' repeatedly flashed over the vice president's face!

The 'X' over Cheney's face appeared each time less than a second, creating an odd subliminal effect.

Can someone explain what is going on? It seems like it was a practical joke - but maybe CNN was trying to tell us something...

(Thanks Drudge)