I would be in favor of it, but it would have to be somehow implemented in the game. My vision is that each dunk gets a rating, and that rating has a small boost on momentum of the team. I'm not saying that you should have a name for each dunk, but a scale of crowd enthusiasm as a result of a particular dunk or the stage of the game it was delivered. That way I think a dunking contest would be just as exciting as a 3pt contest.