As the 2012 Summer Olympics in London come to a close today, we're taking time to recognize the world-class athletes that make watching the Games (even when on tape delay, FOH NBC) worthwhile. But what makes an Olympian badass? Is it medals won? Cockiness Showmanship? Their political outspokenness? Competing while injured? Yes. It's a bit of all those factors and more. From Jesse Owens to The Dream Team to Usain Bolt, check out the 25 Most Badass Summer Olympians of All Time.