Hurray for arbitrarily drawn lines of acceptable behavior.
I'm for all of it. Choreography, props, kick lines, snow angels, whatever. If you don't like it, don't let him in the end zone. If you do like it, don't B word when a free safety decapitates him next time he catches the ball.
One thing I love about baseball and hockey is that players are able to police their own. You showboat during a home run trot? OK, but someone's getting drilled in the rib cage. Good lord, I can't even imagine the clusterfark that would ensue if Bud Selig, in his infinite wisdom, tried to lay down rules for on field celebrations.