Denver Nuggets guard J.R. Smith is a real show-off when it comes to dunking, but it appears he's done. After finishing third in Saturday night's All-Star dunk contest in Phoenix, the 23-year-old Smith said, "I'm getting too old for the dunk contest. My legs are too old," (via the Rocky Mountain News). New York guard Nate Robinson, standing at 5-foot-9, won the competition.