15. J.R. SMITH
What makes J.R. a top-15 dunker is his never-ending enjoyment from making a foe look bad. Being able to drop a “Got ‘em” moment means he’ll attack where others won’t, which can lead to some huge dunks. His dunk on Gary Neal — full body extension, almost more Superman than Dwight — is in a top-five rotation from the 2010-11 season. While he’s more content to hoist threes on his return from China, he can uncoil a hammer as quick as any two in the league.