I loved the Terrell Owens sharpie incident, I loved Joe Horn's cell phone call, and Carr and McKinney's impression of it. Thing is, actual props are eventually going to get out of hand, and I understand allowing none of them.
But the I think the dancing is fine, as long as there is no delay of game. If you allow a team to get into the endzone, then let them celebrate.
"The definition of insanity is doing the same thing over and over and expecting different results."