Havlicek dunked once in his whole career, ironically his first basket as a pro.
I don't have any special animus for Gerald Green, but to see his one big play become the POD on NBA.com, while I saw a very ineffective (for a three year NBA veteran) Green when I watched the game, tells me this is just more of the same.
GG really needs to go somewhere (Europe, D league) where he can actually play a season's full of game under trying circumstances, so he can grow up and become a basketball player.