One of the most underrated basketball player of all time is former Chicago Bull, Scottie Pippen. He was Robin to Michael Jordan's Batman. Pippen not only was an explosive offense player, but he was also one of the best defensive players in the NBA.
One of my favorite moments from Scottie Pippen's career was when he dunked on Hall of Fame player, Patrick Ewing. Ewing is one of the best centers in the history of the NBA and Pippen would dunk on him several times. Cheers Scottie!