Taken from http://www.facepalm.com/post/2009/10/08/Excessive-Celebration-Facepalm.aspx :
Raiders cornerback, Chris Johnson, claims that he was flagged for excessive celebration because of his religion. It's ridiculous that he thinks it was because of his religion and also ridiculous that the NFL even has an "excessive celebration" penalty. If a team is down by 13 points AFTER a touchdown and they want to celebrate that, then I think they should be able to do so.
"A rule instituted in 2006 prohibits NFL players from celebrating in the end zone by "going to the ground to celebrate a touchdown or using the ball as a prop." The instant Johnson fell to his knees he violated the rule. After he did that, Johnson could have read scripture, done a silent prayer or helped an old lady across the street and it wouldn't have mattered. (And, incidentally, it looks a lot more like Johnson is asking the heavens to praise him, rather than the other way around.)"