Left: American Travis Stevens kicks Germany's Ole Bischof right in the knockwurst during during their preliminary judo match. (Reuters)
Right: Carmelo Anthony gets a special delivery from Yao Ming's knee during the Team USA's rout of China. (Getty Images via Lion In Oil)
I don't really have a whole lot to add here. I just want to say that if you can find a job where you can publish pictures of guys getting hit in the testicles, by all means, take it. Teachers and doctors may think working with children or healing the sick is rewarding, but that's only because they haven't tried posting pictures of nut shots.