Vince Carter, aka. Air Canada is definetly one of the best dunkers in the history of the NBA. Drafted in 1998, he won the slamdunk contest which was held in the year 2000.
He probably has the highest vertical leap in the league which makes him a threat near the basket. The image above took place in the Sydney Olympics where he literally jumps
over a 7-2 french player for a impressive slamdunk.