Lightning Bolt

While it's certainly arguable, I thought Usain Bolt (Kevin Drum calls him the "fastest mon alive") was smart to ease up in the last 15-20 meters of his gold medal-winning 100m race in Beijing - it's great showmanship, if not necessarily the best sportsmanship, to treat your adversaries like a bunch of punks by celebrating before the race is over. Showmanship is all about leaving the crowd wanting more, and creating a tantalizing wonderment about what could have been.