18. Charles Barkley
Sir Charles didn't want to be a role model to youths growing up during his playing days, but trash talkers across the nation should have taken notes from the Round Mound. When you're a 6-foot-6 power forward that's dominating your competition as much as Chuck did, you got the right to be a little cocky. Never being one to hold his tongue, Barkley let the dog out in him on the floor and let helpless opponents know exactly how good he really was. We all remember the epic battle with MJ, and some might remember his lighter bombastic moments, but we all know Chuck was deadly with his game and his mouth on the court. Just ask Shaq.